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<div id="projectname">libsdr
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 <span id="projectnumber">0.1.0</span>
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<div id="projectbrief">A simple SDR library</div>
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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li> </ul>
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<div class="title">baseband.hh</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef __SDR_BASEBAND_HH__</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define __SDR_BASEBAND_HH__</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "node.hh"</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "config.hh"</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "utils.hh"</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "traits.hh"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "operators.hh"</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "freqshift.hh"</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keyword">namespace </span><a class="code" href="namespacesdr.html">sdr</a> {</div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">template</span> <<span class="keyword">class</span> Scalar></div>
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<div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html"> 22</a></span> <span class="keyword">class </span><a class="code" href="classsdr_1_1_i_q_base_band.html">IQBaseBand</a>: <span class="keyword">public</span> <a class="code" href="classsdr_1_1_sink.html">Sink</a>< std::complex<Scalar> >, <span class="keyword">public</span> <a class="code" href="classsdr_1_1_source.html">Source</a>, <span class="keyword">public</span> <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ac8422d94925fc86974bf613f9584d9e7"> 26</a></span>  <span class="keyword">typedef</span> std::complex<Scalar> <a class="code" href="classsdr_1_1_i_q_base_band.html#ac8422d94925fc86974bf613f9584d9e7">CScalar</a>;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ae916b696954ddf0f93fdd9d98398b01d"> 29</a></span>  <span class="keyword">typedef</span> int32_t <a class="code" href="classsdr_1_1_i_q_base_band.html#ae916b696954ddf0f93fdd9d98398b01d">SScalar</a>;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a562034e757c3c934c0d43d5e00cb85ce"> 31</a></span>  <span class="keyword">typedef</span> std::complex<SScalar> <a class="code" href="classsdr_1_1_i_q_base_band.html#a562034e757c3c934c0d43d5e00cb85ce">CSScalar</a>;</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ac2ee96b0eac170f1a32d21f6a50ea799"> 35</a></span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#ac2ee96b0eac170f1a32d21f6a50ea799">IQBaseBand</a>(<span class="keywordtype">double</span> Fc, <span class="keywordtype">double</span> width, <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a7abbe9bdb31179c75668b423114a6fd3">order</a>, <span class="keywordtype">size_t</span> sub_sample, <span class="keywordtype">double</span> oFs=0.0)</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  : <a class="code" href="classsdr_1_1_sink.html">Sink</a><CScalar>(), <a class="code" href="classsdr_1_1_source.html">Source</a>(), <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar>(Fc, 0),</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a>(Fc), <a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a>(Fc), <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a>(width), <a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>(<a class="code" href="namespacestd.html">std</a>::max(size_t(1), order)),</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>(sub_sample), <a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a>(oFs), <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>(0),</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>)</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// Allocate and reset ring buffer:</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>);</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; i++) { <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>[i] = 0; }</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a797b04b4d9a44a10134408bcfb117228"> 47</a></span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a797b04b4d9a44a10134408bcfb117228">IQBaseBand</a>(<span class="keywordtype">double</span> Fc, <span class="keywordtype">double</span> Ff, <span class="keywordtype">double</span> width, <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a7abbe9bdb31179c75668b423114a6fd3">order</a>, <span class="keywordtype">size_t</span> sub_sample, <span class="keywordtype">double</span> oFs=0.0)</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  : <a class="code" href="classsdr_1_1_sink.html">Sink</a><CScalar>(), <a class="code" href="classsdr_1_1_source.html">Source</a>(), <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar>(Fc, 0),</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a>(Fc), <a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a>(Ff), <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a>(width), <a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>(<a class="code" href="namespacestd.html">std</a>::max(size_t(1), order)),</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>(sub_sample), <a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a>(oFs), <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>(0),</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a>(0), <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>)</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// Allocate and reset ring buffer:</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; i++) { <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>[i] = 0; }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a95b54fb78d0a24154375f2c04df12079"> 59</a></span>  <span class="keyword">virtual</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a95b54fb78d0a24154375f2c04df12079">~IQBaseBand</a>() {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// Free buffers</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">_buffer</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a7abbe9bdb31179c75668b423114a6fd3"> 67</a></span>  <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a7abbe9bdb31179c75668b423114a6fd3">order</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; }</div>
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<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ad2959e3dcaf6026fca273b3dca33c66b"> 69</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#ad2959e3dcaf6026fca273b3dca33c66b">setOrder</a>(<span class="keywordtype">size_t</span> o) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// ensure filter order >= 1</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  o = (o<1) ? 1 : o;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Reallocate ring buffer and kernel</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (! <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a944346de6bb972f687716bee921a3bad">isEmpty</a>()) { <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>(); }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">if</span> (! <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a944346de6bb972f687716bee921a3bad">isEmpty</a>()) { <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>(); }</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a>(o);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a>(o);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// Update filter kernel</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a> = o; <a class="code" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">_update_filter_kernel</a>();</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ac075931ee502f636478b395d0556294b"> 82</a></span>  <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#ac075931ee502f636478b395d0556294b">centerFrequency</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a>; }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a9dcc80e8ff21e9753f4bb09a20e28cbc"> 84</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a9dcc80e8ff21e9753f4bb09a20e28cbc">setCenterFrequency</a>(<span class="keywordtype">double</span> Fc) {</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a> = Fc; this-><a class="code" href="classsdr_1_1_freq_shift_base.html#a58abc2c8dd6a21fc5654db3068bc7a23">setFrequencyShift</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a>);</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a47ec654ceec6c5210b470bb7ff1a651e"> 89</a></span>  <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a47ec654ceec6c5210b470bb7ff1a651e">filterFrequency</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a>; }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#af72e51030e9a72fcffce7f75c82bb6fd"> 91</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#af72e51030e9a72fcffce7f75c82bb6fd">setFilterFrequency</a>(<span class="keywordtype">double</span> Ff) {</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a> = Ff; <a class="code" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">_update_filter_kernel</a>();</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  }</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a60ee9b251a29ca25236d5c725b086516"> 96</a></span>  <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a60ee9b251a29ca25236d5c725b086516">filterWidth</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a>; }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a918174afe3f6ae0e6373368d99320552"> 98</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a918174afe3f6ae0e6373368d99320552">setFilterWidth</a>(<span class="keywordtype">double</span> width) {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a> = width; <a class="code" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">_update_filter_kernel</a>();</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a04c5dd06532c40bd54a456cdfb064716"> 103</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a04c5dd06532c40bd54a456cdfb064716">subSample</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>; }</div>
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<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a2b7a0ca1c5f35e94a6b3031be2f43778"> 105</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a2b7a0ca1c5f35e94a6b3031be2f43778">setSubsample</a>(<span class="keywordtype">size_t</span> sub_sample) {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a> = std::max(<span class="keywordtype">size_t</span>(1), sub_sample); <a class="code" href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9">_reconfigure</a>();</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ac426a960e5fcb82475cd2fbb57b5d9df"> 110</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#ac426a960e5fcb82475cd2fbb57b5d9df">setOutputSampleRate</a>(<span class="keywordtype">double</span> Fs) {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a> = Fs; <a class="code" href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9">_reconfigure</a>();</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a737f6c7d26595934f3d5a577304d4e97"> 115</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a737f6c7d26595934f3d5a577304d4e97">config</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_config.html">Config</a> &src_cfg)</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  {</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// Requires type, sample rate & buffer size</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (!src_cfg.<a class="code" href="classsdr_1_1_config.html#a7cdfc69aa8e3ab975db7251747343a20">hasType</a>() || !src_cfg.<a class="code" href="classsdr_1_1_config.html#a5df3f75dcd6e678bd5f029a7400b404e">hasSampleRate</a>() || !src_cfg.<a class="code" href="classsdr_1_1_config.html#a485e488e1411e52c722b22d1807be406">hasBufferSize</a>()) { <span class="keywordflow">return</span>; }</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// Check buffer type</span></div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">if</span> (Config::typeId<CScalar>() != src_cfg.<a class="code" href="classsdr_1_1_config.html#afebc90c2a5f54a8a3ab5b896cfe37724">type</a>()) {</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="classsdr_1_1_config_error.html">ConfigError</a> err;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  err << <span class="stringliteral">"Can not configure IQBaseBand: Invalid type "</span> << src_cfg.<a class="code" href="classsdr_1_1_config.html#afebc90c2a5f54a8a3ab5b896cfe37724">type</a>()</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  << <span class="stringliteral">", expected "</span> << Config::typeId<CScalar>();</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">throw</span> err;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// Store sample rate</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a> = src_cfg.<a class="code" href="classsdr_1_1_config.html#a42cfb658302fd7de7729ce2c740e9275">sampleRate</a>();</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// Store source buffer size</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">_sourceBs</a> = src_cfg.<a class="code" href="classsdr_1_1_config.html#a940f217ca5157e1a43c55fec08a22362">bufferSize</a>();</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9">_reconfigure</a>();</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a4add91f21932190fbe0473cfa4f9c1f7"> 136</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a4add91f21932190fbe0473cfa4f9c1f7">process</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer</a>< std::complex<Scalar> > &buffer, <span class="keywordtype">bool</span> allow_overwrite)</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (allow_overwrite) {</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">// Perform in-place if @c allow_overwrite</span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#ae79b3b824eb5610a1b44732f8ef3842a">_process</a>(buffer, buffer);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">_buffer</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#ab2f4ac2dc396108141ec8473bfb7f99a">isUnused</a>()) {</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// Otherwise store results into output buffer.</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#ae79b3b824eb5610a1b44732f8ef3842a">_process</a>(buffer, <a class="code" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">_buffer</a>);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor">#ifdef SDR_DEBUG</span></div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="classsdr_1_1_log_message.html">LogMessage</a> msg(LOG_WARNING);</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  msg << <span class="stringliteral">"IQBaseBand: Drop buffer: Output buffer still in use."</span>;</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="classsdr_1_1_logger.html#a9b12ce53593be134b7d7dea62607d22d">Logger::get</a>().<a class="code" href="classsdr_1_1_logger.html#ab887e598a2c4dc1a3a3f1027d91e0e58">log</a>(msg);</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00156"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9"> 156</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9">_reconfigure</a>()</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// If _oFs > 0 -> set _sub_sample to match the sample rate (approx).</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a> > 0) {</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a> = <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>/<a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a>;</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a> < 1) { <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>=1; }</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// Update filter kernel</span></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">_update_filter_kernel</a>();</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// Update freq shift operator:</span></div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  this-><a class="code" href="classsdr_1_1_freq_shift_base.html#ac78f1ac2da7e6cf2cd0a6f6bfc15a02c">setSampleRate</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>);</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// Calc output buffer size</span></div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">size_t</span> buffer_size = <a class="code" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">_sourceBs</a>/<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>;</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">_sourceBs</a>%<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>) { buffer_size += 1; }</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// Allocate output buffer</span></div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">_buffer</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a>(buffer_size);</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// Reset internal state</span></div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a> = 0;</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a> = 0;</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a> = 0;</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="classsdr_1_1_log_message.html">LogMessage</a> msg(LOG_DEBUG);</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  msg << <span class="stringliteral">"Configured IQBaseBand node:"</span> << std::endl</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  << <span class="stringliteral">" type "</span> << <a class="code" href="classsdr_1_1_traits.html">Traits< std::complex<Scalar></a> >::scalarId << std::endl</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  << <span class="stringliteral">" sample-rate "</span> << <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a> << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  << <span class="stringliteral">" center freq "</span> << <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a> << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  << <span class="stringliteral">" width "</span> << <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a> << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  << <span class="stringliteral">" kernel "</span> << <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a> << std::endl</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  << <span class="stringliteral">" in buffer size "</span> << <a class="code" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">_sourceBs</a> << std::endl</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  << <span class="stringliteral">" sub-sample by "</span> << _sub_sample << std::endl</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  << <span class="stringliteral">" out buffer size "</span> << buffer_size;</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <a class="code" href="classsdr_1_1_logger.html#a9b12ce53593be134b7d7dea62607d22d">Logger::get</a>().<a class="code" href="classsdr_1_1_logger.html#ab887e598a2c4dc1a3a3f1027d91e0e58">log</a>(msg);</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// Propergate config</span></div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  this-><a class="code" href="classsdr_1_1_source.html#afd4c7e3fb94a057ac40e9877167791ec">setConfig</a>(<a class="code" href="classsdr_1_1_config.html">Config</a>(<a class="code" href="classsdr_1_1_traits.html">Traits</a>< std::complex<Scalar> >::scalarId,</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>/_sub_sample, buffer_size, 1));</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
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<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ae79b3b824eb5610a1b44732f8ef3842a"> 198</a></span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#ae79b3b824eb5610a1b44732f8ef3842a">_process</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a> &in, <span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a> &out) {</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">size_t</span> i=0, j=0;</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">for</span> (; i<in.<a class="code" href="classsdr_1_1_buffer.html#ad2232275b51b1189daea15c6cd9b3a20">size</a>(); i++, <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>++) {</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">// Store sample in ring buffer</span></div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>[<a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>] = in[i];</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// Apply filter on ring-buffer and shift freq</span></div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a> += this-><a class="code" href="classsdr_1_1_freq_shift_base.html#a871a9aa29165fa8ff1aff21355cdda8b">applyFrequencyShift</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#ab7b35251cce6051a56dbb24c78e8e4cd">_filter_ring</a>());</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// _ring_offset modulo _order</span></div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>++;</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a> == <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>) { <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a> = 0; }</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="comment">// If _sample_count samples have been averaged:</span></div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a> == <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>) {</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment">// Store average in output buffer</span></div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  CSScalar value = <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a>/<a class="code" href="classsdr_1_1_i_q_base_band.html#a562034e757c3c934c0d43d5e00cb85ce">CSScalar</a>(<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>);</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  out[j] = value;</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// reset average, sample count and increment output buffer index j</span></div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a> = 0; <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>=0; j++;</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a> == 1) {</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  out[j] = <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a>; <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a> = 0; <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a> = 0; j++;</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  this-><a class="code" href="classsdr_1_1_source.html#a13921d5daa00574e2057c1ae1fc28054">send</a>(out.<a class="code" href="classsdr_1_1_buffer.html#a3eca322ed118a7b5c4cc62b25ce5d119">head</a>(j), <span class="keyword">true</span>);</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  }</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
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<div class="line"><a name="l00226"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ab7b35251cce6051a56dbb24c78e8e4cd"> 226</a></span>  <span class="keyword">inline</span> CSScalar <a class="code" href="classsdr_1_1_i_q_base_band.html#ab7b35251cce6051a56dbb24c78e8e4cd">_filter_ring</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="keyword"> </span>{</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  CSScalar res = 0;</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">size_t</span> idx = <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>+1;</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a> == idx) { idx = 0; }</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; i++, idx++) {</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (_order == idx) { idx = 0; }</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  res += <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>[i]*<a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>[idx];</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> (res>>14);</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
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<div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7"> 239</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">_update_filter_kernel</a>() {</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">// First, create a filter kernel of a low-pass filter with _width/2 cut-off</span></div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer< std::complex<double></a> > alpha(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>);</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">double</span> w = (M_PI*<a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a>)/(<a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>);</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordtype">double</span> M = double(<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>)/2.;</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordtype">double</span> norm = 0;</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">//std::complex<double> phi(0.0, (2*M_PI*_Ff)/_Fs); phi = std::exp(phi);</span></div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; i++) {</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (_order == 2*i) { alpha[i] = 4*(w/M_PI); }</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">else</span> { alpha[i] = std::sin(w*(i-M))/(w*(i-M)); }</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// Shift freq by +_Ff:</span></div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="comment">//alpha[i] = phi*alpha[i]; phi = phi*phi;</span></div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  alpha[i] *= std::exp(std::complex<double>(0.0, (-2*M_PI*<a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a>*i)/<a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>));</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// apply window function</span></div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  alpha[i] *= (0.42 - 0.5*cos((2*M_PI*i)/_order) + 0.08*cos((4*M_PI*i)/_order));</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// Calc norm</span></div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  norm += std::abs(alpha[i]);</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// Normalize filter coeffs and store in _kernel:</span></div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>; i++) {</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>[i] = (double(1<<14) * alpha[i]) / norm;</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  }</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00266"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7"> 266</a></span>  int32_t <a class="code" href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">_Fc</a>;</div>
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<div class="line"><a name="l00268"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346"> 268</a></span>  int32_t <a class="code" href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">_Ff</a>;</div>
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<div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd"> 270</a></span>  int32_t <a class="code" href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">_Fs</a>;</div>
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<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b"> 272</a></span>  int32_t <a class="code" href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">_width</a>;</div>
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<div class="line"><a name="l00274"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c"> 274</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">_order</a>;</div>
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<div class="line"><a name="l00276"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c"> 276</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">_sub_sample</a>;</div>
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<div class="line"><a name="l00278"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c"> 278</a></span>  <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">_oFs</a>;</div>
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<div class="line"><a name="l00280"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7"> 280</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">_ring_offset</a>;</div>
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<div class="line"><a name="l00282"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf"> 282</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">_sample_count</a>;</div>
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<div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c"> 284</a></span>  CSScalar <a class="code" href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">_last</a>;</div>
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<div class="line"><a name="l00286"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20"> 286</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">_sourceBs</a>;</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
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<div class="line"><a name="l00289"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933"> 289</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a> <a class="code" href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">_kernel</a>;</div>
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<div class="line"><a name="l00291"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0"> 291</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a> <a class="code" href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">_ring</a>;</div>
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<div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6"> 293</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a> <a class="code" href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">_buffer</a>;</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> };</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="keyword">template</span> <<span class="keyword">class</span> Scalar></div>
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<div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html"> 305</a></span> <span class="keyword">class </span><a class="code" href="classsdr_1_1_base_band.html">BaseBand</a>: <span class="keyword">public</span> <a class="code" href="classsdr_1_1_sink.html">Sink</a><Scalar>, <span class="keyword">public</span> <a class="code" href="classsdr_1_1_source.html">Source</a>, <span class="keyword">public</span> <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar></div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> {</div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#af431512cfeefa7687a381f2f4a89d48f"> 309</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classsdr_1_1_freq_shift_base.html#aaabd2094734ce7479591569d6bd3ea7e">FreqShiftBase<Scalar>::CScalar</a> <a class="code" href="classsdr_1_1_base_band.html#af431512cfeefa7687a381f2f4a89d48f">CScalar</a>;</div>
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<div class="line"><a name="l00311"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a6e17045e3d019be6518d9f4be7de5b66"> 311</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classsdr_1_1_freq_shift_base.html#af613bd56b0ccf4532fb729aaaca959e7">FreqShiftBase<Scalar>::SScalar</a> <a class="code" href="classsdr_1_1_base_band.html#a6e17045e3d019be6518d9f4be7de5b66">SScalar</a>;</div>
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<div class="line"><a name="l00313"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a24238931b88dad7c83900efee6efd3d6"> 313</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classsdr_1_1_freq_shift_base.html#ae9142edde557f4987cfb035ab5d85e06">FreqShiftBase<Scalar>::CSScalar</a> <a class="code" href="classsdr_1_1_base_band.html#a24238931b88dad7c83900efee6efd3d6">CSScalar</a>;</div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> </div>
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00322"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#afcf0692c99496dec1419050a03e177b5"> 322</a></span>  <a class="code" href="classsdr_1_1_base_band.html#afcf0692c99496dec1419050a03e177b5">BaseBand</a>(<span class="keywordtype">double</span> Fc, <span class="keywordtype">double</span> width, <span class="keywordtype">size_t</span> order, <span class="keywordtype">size_t</span> sub_sample)</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  : <a class="code" href="classsdr_1_1_sink.html">Sink</a><Scalar>(), <a class="code" href="classsdr_1_1_source.html">Source</a>(), <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar>(Fc, 0),</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <a class="code" href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4">_Ff</a>(Fc), <a class="code" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">_width</a>(width), <a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>(<a class="code" href="namespacestd.html">std</a>::max(size_t(1), order)),</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>(sub_sample), <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>(0), <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>(0),</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a>(0), <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>)</div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  {</div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// Allocate and reset ring buffer:</span></div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<SScalar></a>(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>);</div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++) { <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>[i] = 0; }</div>
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<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div>
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<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div>
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<div class="line"><a name="l00340"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a8e1abce4d8e46d419ccc47ac522268f3"> 340</a></span>  <a class="code" href="classsdr_1_1_base_band.html#a8e1abce4d8e46d419ccc47ac522268f3">BaseBand</a>(<span class="keywordtype">double</span> Fc, <span class="keywordtype">double</span> Ff, <span class="keywordtype">double</span> width, <span class="keywordtype">size_t</span> order, <span class="keywordtype">size_t</span> sub_sample)</div>
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<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  : <a class="code" href="classsdr_1_1_sink.html">Sink</a><Scalar>(), <a class="code" href="classsdr_1_1_source.html">Source</a>(), <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase</a><Scalar>(Fc, 0),</div>
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<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <a class="code" href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4">_Ff</a>(Ff), <a class="code" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">_width</a>(width), <a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>(<a class="code" href="namespacestd.html">std</a>::max(size_t(1), order)),</div>
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<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>(sub_sample), <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>(0), <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>(0),</div>
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<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a>(0), <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>)</div>
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<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  {</div>
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<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="comment">// Allocate and reset ring buffer:</span></div>
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<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<SScalar></a>(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>);</div>
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<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++) { <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>[i] = 0; }</div>
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  }</div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
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<div class="line"><a name="l00352"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a82d75bf057d6d0b60ce39c8721eac386"> 352</a></span>  <span class="keyword">virtual</span> <a class="code" href="classsdr_1_1_base_band.html#a82d75bf057d6d0b60ce39c8721eac386">~BaseBand</a>() {</div>
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<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">// Free buffers</span></div>
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<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <a class="code" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">_buffer</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  }</div>
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<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div>
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<div class="line"><a name="l00360"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#adcaeff6352ee34550c04c9d42f669dbe"> 360</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_base_band.html#adcaeff6352ee34550c04c9d42f669dbe">config</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_config.html">Config</a> &src_cfg) {</div>
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<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="comment">// Requires type, sample rate & buffer size</span></div>
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<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">if</span> (!src_cfg.<a class="code" href="classsdr_1_1_config.html#a7cdfc69aa8e3ab975db7251747343a20">hasType</a>() || !src_cfg.<a class="code" href="classsdr_1_1_config.html#a5df3f75dcd6e678bd5f029a7400b404e">hasSampleRate</a>() || !src_cfg.<a class="code" href="classsdr_1_1_config.html#a485e488e1411e52c722b22d1807be406">hasBufferSize</a>()) { <span class="keywordflow">return</span>; }</div>
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<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="comment">// Check buffer type</span></div>
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<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">if</span> (Config::typeId<Scalar>() != src_cfg.<a class="code" href="classsdr_1_1_config.html#afebc90c2a5f54a8a3ab5b896cfe37724">type</a>()) {</div>
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<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a class="code" href="classsdr_1_1_config_error.html">ConfigError</a> err;</div>
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<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  err << <span class="stringliteral">"Can not configure BaseBand: Invalid type "</span> << src_cfg.<a class="code" href="classsdr_1_1_config.html#afebc90c2a5f54a8a3ab5b896cfe37724">type</a>()</div>
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<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  << <span class="stringliteral">", expected "</span> << Config::typeId<Scalar>();</div>
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<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">throw</span> err;</div>
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<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  }</div>
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<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="comment">// Store sample rate</span></div>
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<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  this-><a class="code" href="classsdr_1_1_base_band.html#a9b5180e296c0b0d83f04cf9b070d202e">setSampleRate</a>(src_cfg.<a class="code" href="classsdr_1_1_config.html#a42cfb658302fd7de7729ce2c740e9275">sampleRate</a>());</div>
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<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
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<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// Calc output buffer size</span></div>
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<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordtype">size_t</span> buffer_size = src_cfg.<a class="code" href="classsdr_1_1_config.html#a940f217ca5157e1a43c55fec08a22362">bufferSize</a>()/<a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>;</div>
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<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">if</span> (src_cfg.<a class="code" href="classsdr_1_1_config.html#a940f217ca5157e1a43c55fec08a22362">bufferSize</a>()%<a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>) { buffer_size += 1; }</div>
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<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// Allocate output buffer</span></div>
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<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <a class="code" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">_buffer</a> = <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a>(buffer_size);</div>
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<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div>
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<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a> = 0;</div>
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<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a> = 0;</div>
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<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a> = 0;</div>
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<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div>
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<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <a class="code" href="classsdr_1_1_log_message.html">LogMessage</a> msg(LOG_DEBUG);</div>
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<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  msg << <span class="stringliteral">"Configured BaseBand node:"</span> << std::endl</div>
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<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  << <span class="stringliteral">" type "</span> << <a class="code" href="classsdr_1_1_traits.html">Traits< std::complex<Scalar></a> >::scalarId << std::endl</div>
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<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  << <span class="stringliteral">" sample-rate "</span> << <a class="code" href="classsdr_1_1_freq_shift_base.html#a813683842a2ca15589e84cb89dccfc9a">FreqShiftBase<Scalar>::sampleRate</a>() << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  << <span class="stringliteral">" center freq "</span> << <a class="code" href="classsdr_1_1_freq_shift_base.html#ae35765fc1fd75d595a77551fa1670606">FreqShiftBase<Scalar>::frequencyShift</a>() << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  << <span class="stringliteral">" width "</span> << <a class="code" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">_width</a> << <span class="stringliteral">"Hz"</span> << std::endl</div>
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<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  << <span class="stringliteral">" kernel "</span> << <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a> << std::endl</div>
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<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  << <span class="stringliteral">" in buffer size "</span> << src_cfg.<a class="code" href="classsdr_1_1_config.html#a940f217ca5157e1a43c55fec08a22362">bufferSize</a>() << std::endl</div>
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<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  << <span class="stringliteral">" sub-sample by "</span> << <a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a> << std::endl</div>
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<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  << <span class="stringliteral">" out buffer size "</span> << buffer_size;</div>
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<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <a class="code" href="classsdr_1_1_logger.html#a9b12ce53593be134b7d7dea62607d22d">Logger::get</a>().<a class="code" href="classsdr_1_1_logger.html#ab887e598a2c4dc1a3a3f1027d91e0e58">log</a>(msg);</div>
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<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div>
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<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="comment">// Propergate config</span></div>
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<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  this-><a class="code" href="classsdr_1_1_source.html#afd4c7e3fb94a057ac40e9877167791ec">setConfig</a>(<a class="code" href="classsdr_1_1_config.html">Config</a>(<a class="code" href="classsdr_1_1_traits.html">Traits</a>< std::complex<Scalar> >::scalarId,</div>
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<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase<Scalar>::sampleRate</a>()/<a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>, buffer_size, 1));</div>
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<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  }</div>
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<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> </div>
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<div class="line"><a name="l00400"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a9b5180e296c0b0d83f04cf9b070d202e"> 400</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_base_band.html#a9b5180e296c0b0d83f04cf9b070d202e">setSampleRate</a>(<span class="keywordtype">double</span> Fs) {</div>
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<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <a class="code" href="classsdr_1_1_freq_shift_base.html#ac78f1ac2da7e6cf2cd0a6f6bfc15a02c">FreqShiftBase<Scalar>::setSampleRate</a>(Fs);</div>
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<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <a class="code" href="classsdr_1_1_base_band.html#ab82da1c27859bf64c044bc7f9bb0c568">_update_filter_kernel</a>();</div>
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<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  }</div>
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<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div>
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<div class="line"><a name="l00407"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a35bd6ce1dd4381f20bf5112e718c48f1"> 407</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_base_band.html#a35bd6ce1dd4381f20bf5112e718c48f1">process</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer<Scalar></a> &buffer, <span class="keywordtype">bool</span> allow_overwrite)</div>
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<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  {</div>
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<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">_buffer</a>.<a class="code" href="classsdr_1_1_raw_buffer.html#ab2f4ac2dc396108141ec8473bfb7f99a">isUnused</a>()) {</div>
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<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <a class="code" href="classsdr_1_1_base_band.html#a603c4b949058d0e65870c841e4f4de48">_process</a>(buffer, <a class="code" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">_buffer</a>);</div>
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<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="preprocessor">#ifdef SDR_DEBUG</span></div>
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<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <a class="code" href="classsdr_1_1_log_message.html">LogMessage</a> msg(LOG_WARNING);</div>
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<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  msg << <span class="stringliteral">"BaseBand: Drop buffer: Output buffer still in use."</span>;</div>
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<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <a class="code" href="classsdr_1_1_logger.html#a9b12ce53593be134b7d7dea62607d22d">Logger::get</a>().<a class="code" href="classsdr_1_1_logger.html#ab887e598a2c4dc1a3a3f1027d91e0e58">log</a>(msg);</div>
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<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  }</div>
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<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div>
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<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div>
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<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> </div>
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<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00425"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a603c4b949058d0e65870c841e4f4de48"> 425</a></span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_base_band.html#a603c4b949058d0e65870c841e4f4de48">_process</a>(<span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer<Scalar></a> &in, <span class="keyword">const</span> <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a> &out) {</div>
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<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordtype">size_t</span> i=0, j=0;</div>
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<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">for</span> (; i<in.<a class="code" href="classsdr_1_1_buffer.html#ad2232275b51b1189daea15c6cd9b3a20">size</a>(); i++) {</div>
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<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="comment">// Store sample in ring buffer</span></div>
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<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>[<a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>] = in[i];</div>
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<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div>
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<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a> += this-><a class="code" href="classsdr_1_1_freq_shift_base.html#a871a9aa29165fa8ff1aff21355cdda8b">applyFrequencyShift</a>(<a class="code" href="classsdr_1_1_base_band.html#a3b868d96f64b282bc131094efb1a5a64">_filter_ring</a>());</div>
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<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>++;</div>
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<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> </div>
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<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="comment">// _ring_offset modulo _order</span></div>
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<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>++;</div>
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<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a> == <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>) { <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a> = 0; }</div>
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<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div>
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<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// If _sample_count samples have been averaged:</span></div>
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<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a> == <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>) {</div>
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<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="comment">// Store average in output buffer</span></div>
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<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  out[j] = <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a>/<a class="code" href="classsdr_1_1_base_band.html#a24238931b88dad7c83900efee6efd3d6">CSScalar</a>(<a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>);;</div>
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<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="comment">// reset average, sample count and increment output buffer index j</span></div>
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<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a> = 0; <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>=0; j++;</div>
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<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div>
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<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  }</div>
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<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  this-><a class="code" href="classsdr_1_1_source.html#a13921d5daa00574e2057c1ae1fc28054">send</a>(out.<a class="code" href="classsdr_1_1_buffer.html#a3eca322ed118a7b5c4cc62b25ce5d119">head</a>(j), <span class="keyword">true</span>);</div>
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<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
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<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> </div>
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<div class="line"><a name="l00450"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a3b868d96f64b282bc131094efb1a5a64"> 450</a></span>  <span class="keyword">inline</span> CSScalar <a class="code" href="classsdr_1_1_base_band.html#a3b868d96f64b282bc131094efb1a5a64">_filter_ring</a>()</div>
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<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  {</div>
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<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  CSScalar res = 0;</div>
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<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordtype">size_t</span> idx = <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>+1;</div>
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<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">if</span> (<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a> == idx) { idx = 0; }</div>
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<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++, idx++) {</div>
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<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (_order == idx) { idx = 0; }</div>
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<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  res += <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>[i]*<a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>[idx];</div>
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<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  }</div>
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<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">return</span> (res>><a class="code" href="classsdr_1_1_traits.html">Traits<Scalar>::shift</a>);</div>
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<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
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<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> </div>
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<div class="line"><a name="l00463"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#ab82da1c27859bf64c044bc7f9bb0c568"> 463</a></span>  <span class="keywordtype">void</span> <a class="code" href="classsdr_1_1_base_band.html#ab82da1c27859bf64c044bc7f9bb0c568">_update_filter_kernel</a>() {</div>
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<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="comment">// First, create a filter kernel of a low-pass filter with</span></div>
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<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">// _width/2 cut-off</span></div>
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<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer< std::complex<double></a> > alpha(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>);</div>
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<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordtype">double</span> w = (2*M_PI*<a class="code" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">_width</a>)/(2*<a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase<Scalar>::sampleRate</a>());</div>
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<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordtype">double</span> M = double(<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>)/2;</div>
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<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordtype">double</span> norm = 0;</div>
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<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++) {</div>
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<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">if</span> (_order == (2*i)) { alpha[i] = 1; }</div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">else</span> { alpha[i] = std::sin(w*(i-M))/(w*(i-M)); }</div>
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<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  }</div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="comment">// Shift filter by _Fc, apply window function and calc norm of filter</span></div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  std::complex<double> phi(0.0, (2*M_PI*<a class="code" href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4">_Ff</a>)/<a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase<Scalar>::sampleRate</a>()); phi = std::exp(phi);</div>
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<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++) {</div>
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<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">// Shift filter kernel</span></div>
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<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  alpha[i] = alpha[i]*std::exp(std::complex<double>(0, (2*M_PI*_Ff*i)/<a class="code" href="classsdr_1_1_freq_shift_base.html">FreqShiftBase<Scalar>::sampleRate</a>()));</div>
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<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// apply window function</span></div>
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  alpha[i] *= (0.42 - 0.5*cos((2*M_PI*(i+1))/(_order+2)) +</div>
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<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  0.08*cos((4*M_PI*(i+1))/(_order+2)));</div>
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<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="comment">// Calc norm</span></div>
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<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  norm += std::abs(alpha[i]);</div>
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<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  }</div>
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<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="comment">// Normalize filter coeffs and store in _kernel:</span></div>
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<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0; i<<a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>; i++) {</div>
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<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>[i] = ((double(1<<<a class="code" href="classsdr_1_1_traits.html">Traits<Scalar>::shift</a>) * alpha[i]) / norm);</div>
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<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  }</div>
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<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="comment">// free alpha</span></div>
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<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  alpha.<a class="code" href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">unref</a>();</div>
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<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  }</div>
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<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> </div>
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<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00495"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4"> 495</a></span>  <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4">_Ff</a>;</div>
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<div class="line"><a name="l00497"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb"> 497</a></span>  <span class="keywordtype">double</span> <a class="code" href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">_width</a>;</div>
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<div class="line"><a name="l00499"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1"> 499</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">_order</a>;</div>
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<div class="line"><a name="l00501"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735"> 501</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">_sub_sample</a>;</div>
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<div class="line"><a name="l00503"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6"> 503</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">_ring_offset</a>;</div>
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<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> </div>
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<div class="line"><a name="l00506"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698"> 506</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">_sample_count</a>;</div>
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<div class="line"><a name="l00508"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8"> 508</a></span>  CSScalar <a class="code" href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">_last</a>;</div>
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<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div>
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<div class="line"><a name="l00511"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a3190f860e84dbe6eb8a4fa55e5a19b42"> 511</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classsdr_1_1_base_band.html#a3190f860e84dbe6eb8a4fa55e5a19b42">_shift_freq</a>;</div>
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<div class="line"><a name="l00513"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#aab790a4c39ab63becd65ba1970b48ebe"> 513</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer< CSScalar ></a> <a class="code" href="classsdr_1_1_base_band.html#aab790a4c39ab63becd65ba1970b48ebe">_lut</a>;</div>
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<div class="line"><a name="l00515"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#af0533d9636f4acf0863693ce2eb7e08e"> 515</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#af0533d9636f4acf0863693ce2eb7e08e">_lut_inc</a>;</div>
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<div class="line"><a name="l00517"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#afffcd2c96c4e2917d4dd60f2049fab64"> 517</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#afffcd2c96c4e2917d4dd60f2049fab64">_lut_count</a>;</div>
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<div class="line"><a name="l00518"></a><span class="lineno"> 518</span> </div>
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<div class="line"><a name="l00520"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5"> 520</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<CSScalar></a> <a class="code" href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">_kernel</a>;</div>
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<div class="line"><a name="l00522"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f"> 522</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<SScalar></a> <a class="code" href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">_ring</a>;</div>
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<div class="line"><a name="l00524"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7"> 524</a></span>  <a class="code" href="classsdr_1_1_buffer.html">Buffer<CScalar></a> <a class="code" href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">_buffer</a>;</div>
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<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div>
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<div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00528"></a><span class="lineno"><a class="line" href="classsdr_1_1_base_band.html#ab9673003415f11a53470e39dba82e099"> 528</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> <a class="code" href="classsdr_1_1_base_band.html#ab9673003415f11a53470e39dba82e099">_lut_size</a>=128;</div>
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<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> };</div>
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<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> </div>
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<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> }</div>
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<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> </div>
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<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="preprocessor">#endif // __SDR_BASEBAND_HH__</span></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a24238931b88dad7c83900efee6efd3d6"><div class="ttname"><a href="classsdr_1_1_base_band.html#a24238931b88dad7c83900efee6efd3d6">sdr::BaseBand::CSScalar</a></div><div class="ttdeci">FreqShiftBase< Scalar >::CSScalar CSScalar</div><div class="ttdoc">The complex super scalar. </div><div class="ttdef"><b>Definition:</b> baseband.hh:313</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a82d75bf057d6d0b60ce39c8721eac386"><div class="ttname"><a href="classsdr_1_1_base_band.html#a82d75bf057d6d0b60ce39c8721eac386">sdr::BaseBand::~BaseBand</a></div><div class="ttdeci">virtual ~BaseBand()</div><div class="ttdoc">Destructor. </div><div class="ttdef"><b>Definition:</b> baseband.hh:352</div></div>
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<div class="ttc" id="classsdr_1_1_config_html"><div class="ttname"><a href="classsdr_1_1_config.html">sdr::Config</a></div><div class="ttdoc">A collection of configuration information that is send by a source to all connected sinks to properga...</div><div class="ttdef"><b>Definition:</b> node.hh:35</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_ae35765fc1fd75d595a77551fa1670606"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#ae35765fc1fd75d595a77551fa1670606">sdr::FreqShiftBase::frequencyShift</a></div><div class="ttdeci">double frequencyShift() const </div><div class="ttdoc">Returns the frequency shift. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:51</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a04c5dd06532c40bd54a456cdfb064716"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a04c5dd06532c40bd54a456cdfb064716">sdr::IQBaseBand::subSample</a></div><div class="ttdeci">size_t subSample() const </div><div class="ttdoc">Returns the sub sampling. </div><div class="ttdef"><b>Definition:</b> baseband.hh:103</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a1bbc86d2b25e284ec2e3c4ad9cf658e7"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a1bbc86d2b25e284ec2e3c4ad9cf658e7">sdr::IQBaseBand::_ring_offset</a></div><div class="ttdeci">size_t _ring_offset</div><div class="ttdoc">The current index of the ring buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:280</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_abd62f27924fe4bd0dff0ad75f312584b"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#abd62f27924fe4bd0dff0ad75f312584b">sdr::IQBaseBand::_width</a></div><div class="ttdeci">int32_t _width</div><div class="ttdoc">The filter width. </div><div class="ttdef"><b>Definition:</b> baseband.hh:272</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a562034e757c3c934c0d43d5e00cb85ce"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a562034e757c3c934c0d43d5e00cb85ce">sdr::IQBaseBand::CSScalar</a></div><div class="ttdeci">std::complex< SScalar > CSScalar</div><div class="ttdoc">Complex SScalar type. </div><div class="ttdef"><b>Definition:</b> baseband.hh:31</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a7fbe83bf8cd4ba081296116e16b9f698"><div class="ttname"><a href="classsdr_1_1_base_band.html#a7fbe83bf8cd4ba081296116e16b9f698">sdr::BaseBand::_sample_count</a></div><div class="ttdeci">size_t _sample_count</div><div class="ttdoc">The current number of averages. </div><div class="ttdef"><b>Definition:</b> baseband.hh:506</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a47ec654ceec6c5210b470bb7ff1a651e"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a47ec654ceec6c5210b470bb7ff1a651e">sdr::IQBaseBand::filterFrequency</a></div><div class="ttdeci">double filterFrequency() const </div><div class="ttdoc">Returns the filter frequency. </div><div class="ttdef"><b>Definition:</b> baseband.hh:89</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_af431512cfeefa7687a381f2f4a89d48f"><div class="ttname"><a href="classsdr_1_1_base_band.html#af431512cfeefa7687a381f2f4a89d48f">sdr::BaseBand::CScalar</a></div><div class="ttdeci">FreqShiftBase< Scalar >::CScalar CScalar</div><div class="ttdoc">The complex input scalar. </div><div class="ttdef"><b>Definition:</b> baseband.hh:309</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ad2959e3dcaf6026fca273b3dca33c66b"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ad2959e3dcaf6026fca273b3dca33c66b">sdr::IQBaseBand::setOrder</a></div><div class="ttdeci">void setOrder(size_t o)</div><div class="ttdoc">(Re-) Sets the filter order. </div><div class="ttdef"><b>Definition:</b> baseband.hh:69</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_ac78f1ac2da7e6cf2cd0a6f6bfc15a02c"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#ac78f1ac2da7e6cf2cd0a6f6bfc15a02c">sdr::FreqShiftBase::setSampleRate</a></div><div class="ttdeci">virtual void setSampleRate(double Fs)</div><div class="ttdoc">Sets the sample rate and updates the LUT. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:46</div></div>
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<div class="ttc" id="classsdr_1_1_source_html_a13921d5daa00574e2057c1ae1fc28054"><div class="ttname"><a href="classsdr_1_1_source.html#a13921d5daa00574e2057c1ae1fc28054">sdr::Source::send</a></div><div class="ttdeci">virtual void send(const RawBuffer &buffer, bool allow_overwrite=false)</div><div class="ttdoc">Sends the given buffer to all connected sinks. </div><div class="ttdef"><b>Definition:</b> node.cc:67</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a2ddc881b31b6142d53486d1d2110841c"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a2ddc881b31b6142d53486d1d2110841c">sdr::IQBaseBand::_sub_sample</a></div><div class="ttdeci">size_t _sub_sample</div><div class="ttdoc">The number of sample averages for the sub sampling. </div><div class="ttdef"><b>Definition:</b> baseband.hh:276</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html">sdr::IQBaseBand</a></div><div class="ttdoc">This class performs several operations on the complex (integral) input stream, it first filters out s...</div><div class="ttdef"><b>Definition:</b> baseband.hh:22</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ac2ee96b0eac170f1a32d21f6a50ea799"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ac2ee96b0eac170f1a32d21f6a50ea799">sdr::IQBaseBand::IQBaseBand</a></div><div class="ttdeci">IQBaseBand(double Fc, double width, size_t order, size_t sub_sample, double oFs=0.0)</div><div class="ttdoc">Constructor, the filter center frequency Ff equals the given center frequency Fc. ...</div><div class="ttdef"><b>Definition:</b> baseband.hh:35</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a603c4b949058d0e65870c841e4f4de48"><div class="ttname"><a href="classsdr_1_1_base_band.html#a603c4b949058d0e65870c841e4f4de48">sdr::BaseBand::_process</a></div><div class="ttdeci">void _process(const Buffer< Scalar > &in, const Buffer< CScalar > &out)</div><div class="ttdoc">Performs the actual procssing. </div><div class="ttdef"><b>Definition:</b> baseband.hh:425</div></div>
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<div class="ttc" id="classsdr_1_1_sink_html"><div class="ttname"><a href="classsdr_1_1_sink.html">sdr::Sink</a></div><div class="ttdoc">Typed sink. </div><div class="ttdef"><b>Definition:</b> node.hh:192</div></div>
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<div class="ttc" id="namespacesdr_html"><div class="ttname"><a href="namespacesdr.html">sdr</a></div><div class="ttdef"><b>Definition:</b> afsk.hh:6</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ac075931ee502f636478b395d0556294b"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ac075931ee502f636478b395d0556294b">sdr::IQBaseBand::centerFrequency</a></div><div class="ttdeci">double centerFrequency() const </div><div class="ttdoc">Returns the center frequency. </div><div class="ttdef"><b>Definition:</b> baseband.hh:82</div></div>
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<div class="ttc" id="classsdr_1_1_raw_buffer_html_a944346de6bb972f687716bee921a3bad"><div class="ttname"><a href="classsdr_1_1_raw_buffer.html#a944346de6bb972f687716bee921a3bad">sdr::RawBuffer::isEmpty</a></div><div class="ttdeci">bool isEmpty() const </div><div class="ttdoc">Returns true if the buffer is invalid/empty. </div><div class="ttdef"><b>Definition:</b> buffer.hh:77</div></div>
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<div class="ttc" id="namespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div><div class="ttdef"><b>Definition:</b> operators.hh:9</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a9dcc80e8ff21e9753f4bb09a20e28cbc"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a9dcc80e8ff21e9753f4bb09a20e28cbc">sdr::IQBaseBand::setCenterFrequency</a></div><div class="ttdeci">void setCenterFrequency(double Fc)</div><div class="ttdoc">Resets the center frequency. </div><div class="ttdef"><b>Definition:</b> baseband.hh:84</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_a58abc2c8dd6a21fc5654db3068bc7a23"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#a58abc2c8dd6a21fc5654db3068bc7a23">sdr::FreqShiftBase::setFrequencyShift</a></div><div class="ttdeci">virtual void setFrequencyShift(double F)</div><div class="ttdoc">Sets the frequency shift and updates the LUT. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:53</div></div>
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<div class="ttc" id="classsdr_1_1_config_html_a5df3f75dcd6e678bd5f029a7400b404e"><div class="ttname"><a href="classsdr_1_1_config.html#a5df3f75dcd6e678bd5f029a7400b404e">sdr::Config::hasSampleRate</a></div><div class="ttdeci">bool hasSampleRate() const </div><div class="ttdoc">If true, the configuration has a sample rate. </div><div class="ttdef"><b>Definition:</b> node.hh:75</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a7abbe9bdb31179c75668b423114a6fd3"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a7abbe9bdb31179c75668b423114a6fd3">sdr::IQBaseBand::order</a></div><div class="ttdeci">size_t order() const </div><div class="ttdoc">Returns the order of the band-pass filter. </div><div class="ttdef"><b>Definition:</b> baseband.hh:67</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a3b868d96f64b282bc131094efb1a5a64"><div class="ttname"><a href="classsdr_1_1_base_band.html#a3b868d96f64b282bc131094efb1a5a64">sdr::BaseBand::_filter_ring</a></div><div class="ttdeci">CSScalar _filter_ring()</div><div class="ttdoc">Applies the filter on the data stored in the ring buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:450</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a542fe7d54c62d2ac7c8357fb5d35f7f9"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a542fe7d54c62d2ac7c8357fb5d35f7f9">sdr::IQBaseBand::_reconfigure</a></div><div class="ttdeci">void _reconfigure()</div><div class="ttdoc">Reconfigures the node. </div><div class="ttdef"><b>Definition:</b> baseband.hh:156</div></div>
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<div class="ttc" id="classsdr_1_1_source_html"><div class="ttname"><a href="classsdr_1_1_source.html">sdr::Source</a></div><div class="ttdoc">Generic source class. </div><div class="ttdef"><b>Definition:</b> node.hh:213</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a3190f860e84dbe6eb8a4fa55e5a19b42"><div class="ttname"><a href="classsdr_1_1_base_band.html#a3190f860e84dbe6eb8a4fa55e5a19b42">sdr::BaseBand::_shift_freq</a></div><div class="ttdeci">bool _shift_freq</div><div class="ttdoc">If true, Fc!=0. </div><div class="ttdef"><b>Definition:</b> baseband.hh:511</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_a813683842a2ca15589e84cb89dccfc9a"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#a813683842a2ca15589e84cb89dccfc9a">sdr::FreqShiftBase::sampleRate</a></div><div class="ttdeci">double sampleRate() const </div><div class="ttdoc">Returns the sample rate. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:44</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ac426a960e5fcb82475cd2fbb57b5d9df"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ac426a960e5fcb82475cd2fbb57b5d9df">sdr::IQBaseBand::setOutputSampleRate</a></div><div class="ttdeci">void setOutputSampleRate(double Fs)</div><div class="ttdoc">Resets the output sample rate. </div><div class="ttdef"><b>Definition:</b> baseband.hh:110</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_ae9142edde557f4987cfb035ab5d85e06"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#ae9142edde557f4987cfb035ab5d85e06">sdr::FreqShiftBase::CSScalar</a></div><div class="ttdeci">std::complex< SScalar > CSScalar</div><div class="ttdoc">The complex compute (super) scalar of the input type. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:22</div></div>
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<div class="ttc" id="classsdr_1_1_buffer_html_ad2232275b51b1189daea15c6cd9b3a20"><div class="ttname"><a href="classsdr_1_1_buffer.html#ad2232275b51b1189daea15c6cd9b3a20">sdr::Buffer::size</a></div><div class="ttdeci">size_t size() const </div><div class="ttdoc">Returns the number of elements of type T in this buffer. </div><div class="ttdef"><b>Definition:</b> buffer.hh:166</div></div>
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<div class="ttc" id="classsdr_1_1_config_html_a7cdfc69aa8e3ab975db7251747343a20"><div class="ttname"><a href="classsdr_1_1_config.html#a7cdfc69aa8e3ab975db7251747343a20">sdr::Config::hasType</a></div><div class="ttdeci">bool hasType() const </div><div class="ttdoc">If true, the configuration has a type. </div><div class="ttdef"><b>Definition:</b> node.hh:69</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a777b755a8230ea494f7bac5ff98c4e20"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a777b755a8230ea494f7bac5ff98c4e20">sdr::IQBaseBand::_sourceBs</a></div><div class="ttdeci">size_t _sourceBs</div><div class="ttdoc">Buffer size of the source. </div><div class="ttdef"><b>Definition:</b> baseband.hh:286</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_acc93c5f88ac3bf10614c6aab09727edd"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#acc93c5f88ac3bf10614c6aab09727edd">sdr::IQBaseBand::_Fs</a></div><div class="ttdeci">int32_t _Fs</div><div class="ttdoc">The input sample rate. </div><div class="ttdef"><b>Definition:</b> baseband.hh:270</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_af2cabe70849fbf9da652c5ae3e5585a6"><div class="ttname"><a href="classsdr_1_1_base_band.html#af2cabe70849fbf9da652c5ae3e5585a6">sdr::BaseBand::_ring_offset</a></div><div class="ttdeci">size_t _ring_offset</div><div class="ttdoc">The current index of the ring buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:503</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ae916b696954ddf0f93fdd9d98398b01d"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ae916b696954ddf0f93fdd9d98398b01d">sdr::IQBaseBand::SScalar</a></div><div class="ttdeci">int32_t SScalar</div><div class="ttdoc">The (real) computation scalar type (super scalar), the computations are performed with this scalar ty...</div><div class="ttdef"><b>Definition:</b> baseband.hh:29</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a9b5180e296c0b0d83f04cf9b070d202e"><div class="ttname"><a href="classsdr_1_1_base_band.html#a9b5180e296c0b0d83f04cf9b070d202e">sdr::BaseBand::setSampleRate</a></div><div class="ttdeci">virtual void setSampleRate(double Fs)</div><div class="ttdoc">Sets the sample rate and updates the LUT. </div><div class="ttdef"><b>Definition:</b> baseband.hh:400</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a1a803c4e7f54c1f281b4c400d28802f7"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a1a803c4e7f54c1f281b4c400d28802f7">sdr::IQBaseBand::_update_filter_kernel</a></div><div class="ttdeci">void _update_filter_kernel()</div><div class="ttdoc">Updates the band-pass filter kernel. </div><div class="ttdef"><b>Definition:</b> baseband.hh:239</div></div>
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<div class="ttc" id="classsdr_1_1_source_html_afd4c7e3fb94a057ac40e9877167791ec"><div class="ttname"><a href="classsdr_1_1_source.html#afd4c7e3fb94a057ac40e9877167791ec">sdr::Source::setConfig</a></div><div class="ttdeci">virtual void setConfig(const Config &config)</div><div class="ttdoc">Stores the configuration and propergates it if the configuration has been changed. </div><div class="ttdef"><b>Definition:</b> node.cc:98</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a0e5a1ce6011ddb1de0c661d1e2354b7c"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a0e5a1ce6011ddb1de0c661d1e2354b7c">sdr::IQBaseBand::_oFs</a></div><div class="ttdeci">double _oFs</div><div class="ttdoc">Holds the desired output sample rate, _sub_sample will be adjusted accordingly. </div><div class="ttdef"><b>Definition:</b> baseband.hh:278</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a37078c6a2799c118c0892fbdd6968e0c"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a37078c6a2799c118c0892fbdd6968e0c">sdr::IQBaseBand::_order</a></div><div class="ttdeci">size_t _order</div><div class="ttdoc">The order of the filter. </div><div class="ttdef"><b>Definition:</b> baseband.hh:274</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_afcf0692c99496dec1419050a03e177b5"><div class="ttname"><a href="classsdr_1_1_base_band.html#afcf0692c99496dec1419050a03e177b5">sdr::BaseBand::BaseBand</a></div><div class="ttdeci">BaseBand(double Fc, double width, size_t order, size_t sub_sample)</div><div class="ttdoc">Constructs a new BaseBand instance. </div><div class="ttdef"><b>Definition:</b> baseband.hh:322</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_ad2574c8b23dc9b60944f0253825f0af8"><div class="ttname"><a href="classsdr_1_1_base_band.html#ad2574c8b23dc9b60944f0253825f0af8">sdr::BaseBand::_last</a></div><div class="ttdeci">CSScalar _last</div><div class="ttdoc">The current sum of the last _sample_count samples. </div><div class="ttdef"><b>Definition:</b> baseband.hh:508</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ac5b28b7664a51c300ded740850f5e8a6"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ac5b28b7664a51c300ded740850f5e8a6">sdr::IQBaseBand::_buffer</a></div><div class="ttdeci">Buffer< CScalar > _buffer</div><div class="ttdoc">The output buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:293</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a797b04b4d9a44a10134408bcfb117228"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a797b04b4d9a44a10134408bcfb117228">sdr::IQBaseBand::IQBaseBand</a></div><div class="ttdeci">IQBaseBand(double Fc, double Ff, double width, size_t order, size_t sub_sample, double oFs=0.0)</div><div class="ttdoc">Constructor. </div><div class="ttdef"><b>Definition:</b> baseband.hh:47</div></div>
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<div class="ttc" id="classsdr_1_1_buffer_html_a3eca322ed118a7b5c4cc62b25ce5d119"><div class="ttname"><a href="classsdr_1_1_buffer.html#a3eca322ed118a7b5c4cc62b25ce5d119">sdr::Buffer::head</a></div><div class="ttdeci">Buffer< T > head(size_t n) const </div><div class="ttdoc">Returns a new view on this buffer. </div><div class="ttdef"><b>Definition:</b> buffer.hh:237</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ae79b3b824eb5610a1b44732f8ef3842a"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ae79b3b824eb5610a1b44732f8ef3842a">sdr::IQBaseBand::_process</a></div><div class="ttdeci">void _process(const Buffer< CScalar > &in, const Buffer< CScalar > &out)</div><div class="ttdoc">Performs the base-band selection, frequency shift and sub-sampling. </div><div class="ttdef"><b>Definition:</b> baseband.hh:198</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_aaabd2094734ce7479591569d6bd3ea7e"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#aaabd2094734ce7479591569d6bd3ea7e">sdr::FreqShiftBase::CScalar</a></div><div class="ttdeci">std::complex< Scalar > CScalar</div><div class="ttdoc">The complex input signal. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:18</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a95b54fb78d0a24154375f2c04df12079"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a95b54fb78d0a24154375f2c04df12079">sdr::IQBaseBand::~IQBaseBand</a></div><div class="ttdeci">virtual ~IQBaseBand()</div><div class="ttdoc">Destructor. </div><div class="ttdef"><b>Definition:</b> baseband.hh:59</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a45a6cf70c24d876f6ba49f3ff6c33346"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a45a6cf70c24d876f6ba49f3ff6c33346">sdr::IQBaseBand::_Ff</a></div><div class="ttdeci">int32_t _Ff</div><div class="ttdoc">The center frequency of the base band. </div><div class="ttdef"><b>Definition:</b> baseband.hh:268</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_ab82da1c27859bf64c044bc7f9bb0c568"><div class="ttname"><a href="classsdr_1_1_base_band.html#ab82da1c27859bf64c044bc7f9bb0c568">sdr::BaseBand::_update_filter_kernel</a></div><div class="ttdeci">void _update_filter_kernel()</div><div class="ttdoc">Calculates or updates the filter kernel. </div><div class="ttdef"><b>Definition:</b> baseband.hh:463</div></div>
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<div class="ttc" id="classsdr_1_1_logger_html_ab887e598a2c4dc1a3a3f1027d91e0e58"><div class="ttname"><a href="classsdr_1_1_logger.html#ab887e598a2c4dc1a3a3f1027d91e0e58">sdr::Logger::log</a></div><div class="ttdeci">void log(const LogMessage &message)</div><div class="ttdoc">Logs a message. </div><div class="ttdef"><b>Definition:</b> logger.cc:100</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_af72e51030e9a72fcffce7f75c82bb6fd"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#af72e51030e9a72fcffce7f75c82bb6fd">sdr::IQBaseBand::setFilterFrequency</a></div><div class="ttdeci">void setFilterFrequency(double Ff)</div><div class="ttdoc">(Re-) Sets the filter frequency. </div><div class="ttdef"><b>Definition:</b> baseband.hh:91</div></div>
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<div class="ttc" id="classsdr_1_1_config_html_afebc90c2a5f54a8a3ab5b896cfe37724"><div class="ttname"><a href="classsdr_1_1_config.html#afebc90c2a5f54a8a3ab5b896cfe37724">sdr::Config::type</a></div><div class="ttdeci">Type type() const </div><div class="ttdoc">Returns the type. </div><div class="ttdef"><b>Definition:</b> node.hh:71</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a51e65ca8d52b7f933b1fcb92f679a1e0"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a51e65ca8d52b7f933b1fcb92f679a1e0">sdr::IQBaseBand::_ring</a></div><div class="ttdeci">Buffer< CSScalar > _ring</div><div class="ttdoc">A ring buffer of past values. </div><div class="ttdef"><b>Definition:</b> baseband.hh:291</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a35bd6ce1dd4381f20bf5112e718c48f1"><div class="ttname"><a href="classsdr_1_1_base_band.html#a35bd6ce1dd4381f20bf5112e718c48f1">sdr::BaseBand::process</a></div><div class="ttdeci">virtual void process(const Buffer< Scalar > &buffer, bool allow_overwrite)</div><div class="ttdoc">Processes the input buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:407</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_af613bd56b0ccf4532fb729aaaca959e7"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#af613bd56b0ccf4532fb729aaaca959e7">sdr::FreqShiftBase::SScalar</a></div><div class="ttdeci">Traits< Scalar >::SScalar SScalar</div><div class="ttdoc">The compute (super) scalar of the input type. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:20</div></div>
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<div class="ttc" id="classsdr_1_1_logger_html_a9b12ce53593be134b7d7dea62607d22d"><div class="ttname"><a href="classsdr_1_1_logger.html#a9b12ce53593be134b7d7dea62607d22d">sdr::Logger::get</a></div><div class="ttdeci">static Logger & get()</div><div class="ttdoc">Returns the singleton instance of the logger. </div><div class="ttdef"><b>Definition:</b> logger.cc:89</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a27657f14e40d2d7fbb9b8d965083e7cf"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a27657f14e40d2d7fbb9b8d965083e7cf">sdr::IQBaseBand::_sample_count</a></div><div class="ttdeci">size_t _sample_count</div><div class="ttdoc">Holds the current number of samples averaged. </div><div class="ttdef"><b>Definition:</b> baseband.hh:282</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a4d421c04c1b8f61361522eddd5e401e7"><div class="ttname"><a href="classsdr_1_1_base_band.html#a4d421c04c1b8f61361522eddd5e401e7">sdr::BaseBand::_buffer</a></div><div class="ttdeci">Buffer< CScalar > _buffer</div><div class="ttdoc">The output buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:524</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html">sdr::FreqShiftBase</a></div><div class="ttdoc">A performant implementation of a frequency-shift operation on integer signals. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:14</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a43381aa4a16574e5b054cf73bfd492e7"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a43381aa4a16574e5b054cf73bfd492e7">sdr::IQBaseBand::_Fc</a></div><div class="ttdeci">int32_t _Fc</div><div class="ttdoc">The frequency shift of the base band. </div><div class="ttdef"><b>Definition:</b> baseband.hh:266</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a737f6c7d26595934f3d5a577304d4e97"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a737f6c7d26595934f3d5a577304d4e97">sdr::IQBaseBand::config</a></div><div class="ttdeci">virtual void config(const Config &src_cfg)</div><div class="ttdoc">Configures the BaseBand node. </div><div class="ttdef"><b>Definition:</b> baseband.hh:115</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_adc54207b20067fd43fb61f89e5a720e1"><div class="ttname"><a href="classsdr_1_1_base_band.html#adc54207b20067fd43fb61f89e5a720e1">sdr::BaseBand::_order</a></div><div class="ttdeci">size_t _order</div><div class="ttdoc">The order of the band pass filter. </div><div class="ttdef"><b>Definition:</b> baseband.hh:499</div></div>
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<div class="ttc" id="classsdr_1_1_config_error_html"><div class="ttname"><a href="classsdr_1_1_config_error.html">sdr::ConfigError</a></div><div class="ttdoc">The configuration error class. </div><div class="ttdef"><b>Definition:</b> exception.hh:24</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_aab790a4c39ab63becd65ba1970b48ebe"><div class="ttname"><a href="classsdr_1_1_base_band.html#aab790a4c39ab63becd65ba1970b48ebe">sdr::BaseBand::_lut</a></div><div class="ttdeci">Buffer< CSScalar > _lut</div><div class="ttdoc"> look-up table </div><div class="ttdef"><b>Definition:</b> baseband.hh:513</div></div>
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<div class="ttc" id="classsdr_1_1_log_message_html"><div class="ttname"><a href="classsdr_1_1_log_message.html">sdr::LogMessage</a></div><div class="ttdoc">A log message. </div><div class="ttdef"><b>Definition:</b> logger.hh:22</div></div>
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<div class="ttc" id="classsdr_1_1_config_html_a940f217ca5157e1a43c55fec08a22362"><div class="ttname"><a href="classsdr_1_1_config.html#a940f217ca5157e1a43c55fec08a22362">sdr::Config::bufferSize</a></div><div class="ttdeci">size_t bufferSize() const </div><div class="ttdoc">Returns the max. </div><div class="ttdef"><b>Definition:</b> node.hh:83</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ac8422d94925fc86974bf613f9584d9e7"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ac8422d94925fc86974bf613f9584d9e7">sdr::IQBaseBand::CScalar</a></div><div class="ttdeci">std::complex< Scalar > CScalar</div><div class="ttdoc">The complex type of the input stream. </div><div class="ttdef"><b>Definition:</b> baseband.hh:26</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a2b7a0ca1c5f35e94a6b3031be2f43778"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a2b7a0ca1c5f35e94a6b3031be2f43778">sdr::IQBaseBand::setSubsample</a></div><div class="ttdeci">void setSubsample(size_t sub_sample)</div><div class="ttdoc">Resets the sub sampling. </div><div class="ttdef"><b>Definition:</b> baseband.hh:105</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_afffcd2c96c4e2917d4dd60f2049fab64"><div class="ttname"><a href="classsdr_1_1_base_band.html#afffcd2c96c4e2917d4dd60f2049fab64">sdr::BaseBand::_lut_count</a></div><div class="ttdeci">size_t _lut_count</div><div class="ttdoc">The current LUT index times (1<<4). </div><div class="ttdef"><b>Definition:</b> baseband.hh:517</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_ab9673003415f11a53470e39dba82e099"><div class="ttname"><a href="classsdr_1_1_base_band.html#ab9673003415f11a53470e39dba82e099">sdr::BaseBand::_lut_size</a></div><div class="ttdeci">static const size_t _lut_size</div><div class="ttdoc">Size of the look-up table. </div><div class="ttdef"><b>Definition:</b> baseband.hh:528</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a6e17045e3d019be6518d9f4be7de5b66"><div class="ttname"><a href="classsdr_1_1_base_band.html#a6e17045e3d019be6518d9f4be7de5b66">sdr::BaseBand::SScalar</a></div><div class="ttdeci">FreqShiftBase< Scalar >::SScalar SScalar</div><div class="ttdoc">The real super scalar. </div><div class="ttdef"><b>Definition:</b> baseband.hh:311</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html"><div class="ttname"><a href="classsdr_1_1_base_band.html">sdr::BaseBand</a></div><div class="ttdoc">This class performs several operations on the real input stream, It first filters out some part of th...</div><div class="ttdef"><b>Definition:</b> baseband.hh:305</div></div>
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<div class="ttc" id="classsdr_1_1_freq_shift_base_html_a871a9aa29165fa8ff1aff21355cdda8b"><div class="ttname"><a href="classsdr_1_1_freq_shift_base.html#a871a9aa29165fa8ff1aff21355cdda8b">sdr::FreqShiftBase::applyFrequencyShift</a></div><div class="ttdeci">CSScalar applyFrequencyShift(CSScalar value)</div><div class="ttdoc">Performs the frequency shift on a single sample. </div><div class="ttdef"><b>Definition:</b> freqshift.hh:58</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a8f612b4bacf93e8fa290bb2752a35735"><div class="ttname"><a href="classsdr_1_1_base_band.html#a8f612b4bacf93e8fa290bb2752a35735">sdr::BaseBand::_sub_sample</a></div><div class="ttdeci">size_t _sub_sample</div><div class="ttdoc">The number of averages taken for subsampling. </div><div class="ttdef"><b>Definition:</b> baseband.hh:501</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_ad82f571c95904676f3e41aad3894d0f4"><div class="ttname"><a href="classsdr_1_1_base_band.html#ad82f571c95904676f3e41aad3894d0f4">sdr::BaseBand::_Ff</a></div><div class="ttdeci">double _Ff</div><div class="ttdoc">The center frequency of the band pass filter. </div><div class="ttdef"><b>Definition:</b> baseband.hh:495</div></div>
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<div class="ttc" id="classsdr_1_1_raw_buffer_html_a8ffd3cbf476c9036bfada9ae8c7c5e05"><div class="ttname"><a href="classsdr_1_1_raw_buffer.html#a8ffd3cbf476c9036bfada9ae8c7c5e05">sdr::RawBuffer::unref</a></div><div class="ttdeci">void unref()</div><div class="ttdoc">Dereferences the buffer. </div><div class="ttdef"><b>Definition:</b> buffer.cc:63</div></div>
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<div class="ttc" id="classsdr_1_1_raw_buffer_html_ab2f4ac2dc396108141ec8473bfb7f99a"><div class="ttname"><a href="classsdr_1_1_raw_buffer.html#ab2f4ac2dc396108141ec8473bfb7f99a">sdr::RawBuffer::isUnused</a></div><div class="ttdeci">bool isUnused() const </div><div class="ttdoc">We assume here that buffers are owned by one object: A buffer is therefore "unused" if the owner hold...</div><div class="ttdef"><b>Definition:</b> buffer.hh:87</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a8e1abce4d8e46d419ccc47ac522268f3"><div class="ttname"><a href="classsdr_1_1_base_band.html#a8e1abce4d8e46d419ccc47ac522268f3">sdr::BaseBand::BaseBand</a></div><div class="ttdeci">BaseBand(double Fc, double Ff, double width, size_t order, size_t sub_sample)</div><div class="ttdoc">Constructs a new BaseBand instance. </div><div class="ttdef"><b>Definition:</b> baseband.hh:340</div></div>
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<div class="ttc" id="classsdr_1_1_traits_html"><div class="ttname"><a href="classsdr_1_1_traits.html">sdr::Traits</a></div><div class="ttdoc">Forward declaration of type tratis template. </div><div class="ttdef"><b>Definition:</b> traits.hh:20</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_acc734a115e0fb90882efe4f9037e2933"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#acc734a115e0fb90882efe4f9037e2933">sdr::IQBaseBand::_kernel</a></div><div class="ttdeci">Buffer< CSScalar > _kernel</div><div class="ttdoc">The filter kernel of order _order. </div><div class="ttdef"><b>Definition:</b> baseband.hh:289</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a4add91f21932190fbe0473cfa4f9c1f7"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a4add91f21932190fbe0473cfa4f9c1f7">sdr::IQBaseBand::process</a></div><div class="ttdeci">virtual void process(const Buffer< std::complex< Scalar > > &buffer, bool allow_overwrite)</div><div class="ttdoc">Processes the given buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:136</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_aa6a60f7aa8cd3a67cc7170198f11a14c"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#aa6a60f7aa8cd3a67cc7170198f11a14c">sdr::IQBaseBand::_last</a></div><div class="ttdeci">CSScalar _last</div><div class="ttdoc">Holds the current sum of the last _sample_count samples. </div><div class="ttdef"><b>Definition:</b> baseband.hh:284</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a60ee9b251a29ca25236d5c725b086516"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a60ee9b251a29ca25236d5c725b086516">sdr::IQBaseBand::filterWidth</a></div><div class="ttdeci">double filterWidth() const </div><div class="ttdoc">Returns the filter width. </div><div class="ttdef"><b>Definition:</b> baseband.hh:96</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a586aef87dd64f94f9c377b45575681eb"><div class="ttname"><a href="classsdr_1_1_base_band.html#a586aef87dd64f94f9c377b45575681eb">sdr::BaseBand::_width</a></div><div class="ttdeci">double _width</div><div class="ttdoc">The width of the band pass filter. </div><div class="ttdef"><b>Definition:</b> baseband.hh:497</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_af0533d9636f4acf0863693ce2eb7e08e"><div class="ttname"><a href="classsdr_1_1_base_band.html#af0533d9636f4acf0863693ce2eb7e08e">sdr::BaseBand::_lut_inc</a></div><div class="ttdeci">size_t _lut_inc</div><div class="ttdoc">The LUT index increment per (1<<4) samples. </div><div class="ttdef"><b>Definition:</b> baseband.hh:515</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_a615a720afff59af2135d4d6fb926fbf5"><div class="ttname"><a href="classsdr_1_1_base_band.html#a615a720afff59af2135d4d6fb926fbf5">sdr::BaseBand::_kernel</a></div><div class="ttdeci">Buffer< CSScalar > _kernel</div><div class="ttdoc">The filter kernel of order _order. </div><div class="ttdef"><b>Definition:</b> baseband.hh:520</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_ab7b35251cce6051a56dbb24c78e8e4cd"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#ab7b35251cce6051a56dbb24c78e8e4cd">sdr::IQBaseBand::_filter_ring</a></div><div class="ttdeci">CSScalar _filter_ring() const </div><div class="ttdoc">Applies the filter on the data stored in the ring buffer. </div><div class="ttdef"><b>Definition:</b> baseband.hh:226</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_aa2f45ff7e2ef122c59874cedaa4aaf5f"><div class="ttname"><a href="classsdr_1_1_base_band.html#aa2f45ff7e2ef122c59874cedaa4aaf5f">sdr::BaseBand::_ring</a></div><div class="ttdeci">Buffer< SScalar > _ring</div><div class="ttdoc">A ring buffer of past values. </div><div class="ttdef"><b>Definition:</b> baseband.hh:522</div></div>
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<div class="ttc" id="classsdr_1_1_buffer_html"><div class="ttname"><a href="classsdr_1_1_buffer.html">sdr::Buffer< CSScalar ></a></div></div>
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<div class="ttc" id="classsdr_1_1_config_html_a485e488e1411e52c722b22d1807be406"><div class="ttname"><a href="classsdr_1_1_config.html#a485e488e1411e52c722b22d1807be406">sdr::Config::hasBufferSize</a></div><div class="ttdeci">bool hasBufferSize() const </div><div class="ttdoc">If true, the configuration has a buffer size. </div><div class="ttdef"><b>Definition:</b> node.hh:81</div></div>
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<div class="ttc" id="classsdr_1_1_config_html_a42cfb658302fd7de7729ce2c740e9275"><div class="ttname"><a href="classsdr_1_1_config.html#a42cfb658302fd7de7729ce2c740e9275">sdr::Config::sampleRate</a></div><div class="ttdeci">double sampleRate() const </div><div class="ttdoc">Returns the sample rate. </div><div class="ttdef"><b>Definition:</b> node.hh:77</div></div>
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<div class="ttc" id="classsdr_1_1_i_q_base_band_html_a918174afe3f6ae0e6373368d99320552"><div class="ttname"><a href="classsdr_1_1_i_q_base_band.html#a918174afe3f6ae0e6373368d99320552">sdr::IQBaseBand::setFilterWidth</a></div><div class="ttdeci">void setFilterWidth(double width)</div><div class="ttdoc">Sets the filter width. </div><div class="ttdef"><b>Definition:</b> baseband.hh:98</div></div>
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<div class="ttc" id="classsdr_1_1_base_band_html_adcaeff6352ee34550c04c9d42f669dbe"><div class="ttname"><a href="classsdr_1_1_base_band.html#adcaeff6352ee34550c04c9d42f669dbe">sdr::BaseBand::config</a></div><div class="ttdeci">virtual void config(const Config &src_cfg)</div><div class="ttdoc">Configures the base band node. </div><div class="ttdef"><b>Definition:</b> baseband.hh:360</div></div>
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