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<li class="navelem"><a class="el" href="dir_a8a4892678035c62db3a4af7d9811050.html">IPlug</a></li><li class="navelem"><a class="el" href="dir_91051055e54918154e7732bfb3d5e02e.html">Extras</a></li> </ul>
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<a href="_s_v_f_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> </span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> This file is part of the iPlug 2 library. Copyright (C) the iPlug 2 developers. </span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> </span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> See LICENSE.txt for more info.</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> </span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">*/</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <complex></span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include "<a class="code" href="_i_plug_platform_8h.html">IPlugPlatform.h</a>"</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span>BEGIN_IPLUG_NAMESPACE</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#define SVFMODES_VALIST "LowPass"</span>, "HighPass", "BandPass", "Notch", "Peak", "Bell", "LowPassShelf", "HighPassShelf"</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">template</span><<span class="keyword">typename</span> T = <span class="keywordtype">double</span>, <span class="keywordtype">int</span> NC = 1></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="class_s_v_f.html"> 28</a></span><span class="keyword">class </span><a class="code hl_class" href="class_s_v_f.html">SVF</a></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span>{</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">enum</span> EMode</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> kLowPass = 0,</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> kHighPass,</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> kBandPass,</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> kNotch,</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> kPeak,</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> kBell,</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> kLowPassShelf,</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> kHighPassShelf,</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> kNumModes</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> };</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <a class="code hl_class" href="class_s_v_f.html">SVF</a>(EMode mode = kLowPass, <span class="keywordtype">double</span> freqCPS = 1000.)</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> {</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> mNewState.mode = mState.mode = mode;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> mNewState.freq = mState.freq = freqCPS;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> UpdateCoefficients();</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> }</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">static</span> <span class="keywordtype">double</span> PlotResponse(<span class="keywordtype">double</span> freqCPS, <span class="keywordtype">double</span> Q, EMode mode, <span class="keywordtype">double</span> x, <span class="keywordtype">double</span> gain = 0., <span class="keywordtype">double</span> minHz = 1., <span class="keywordtype">double</span> maxHz = 20000)</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> {</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">using </span>cdouble = std::complex<double>;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = freqCPS;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1.0 / Q;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">// const double A = std::pow(10., gain / 40.);</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">static</span> <span class="keywordtype">double</span> minLogHz = std::log10(minHz);</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">static</span> <span class="keywordtype">double</span> maxLogHz = std::log10(maxHz);</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">static</span> <span class="keyword">const</span> cdouble _1j = std::sqrt(cdouble(-1, 0));</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">const</span> <span class="keywordtype">double</span> w = std::pow(10., (x * (maxLogHz - minLogHz)) + minHz);</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">const</span> cdouble s = _1j * w;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> cdouble result;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">switch</span> (mode)</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">case</span> kLowPass: result = g * g / (g * g + g * k * s + s * s); <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">case</span> kBandPass: result = g * s / (g * g + g * k * s + s * s); <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">case</span> kHighPass: result = s * s / (g * g + g * k * s + s * s); <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// case kNotch: result = (g * g) + (s * s) / (g * g + g * k * s + s * s); break;</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">case</span> kPeak: result = (g - s) * (g + s) / (g * g + g * k * s + s * s); <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// case kBell: result = A * (1. + A * k * s + (s * s)) / A + k * s + A * (s * s); break;</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// case kLowPassShelf: result = A * (A + std::sqrt(A) * k * s + (s * s)) / 1. + std::sqrt(A) * k * s + A * (s * s); break;</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// case kHighPassShelf: result = A * (1. + std::sqrt(A) * k * s + A * (s * s)) / A + std::sqrt(A) * k * s + (s * s); break;</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">default</span>: <span class="keywordflow">return</span> 0.;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">const</span> <span class="keywordtype">double</span> magnitude = 20. * std::log10(std::abs(std::real(result)));</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">//DBGMSG("%f\n", magnitude);</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keywordflow">return</span> magnitude;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordtype">void</span> SetFreqCPS(<span class="keywordtype">double</span> freqCPS) { mNewState.freq = <a class="code hl_function" href="group___i_plug_utilities.html#ga027ce10e55fc63bbe14430bb99ac9042">Clip</a>(freqCPS, 10.0, 20000.); }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordtype">void</span> SetQ(<span class="keywordtype">double</span> Q) { mNewState.Q = <a class="code hl_function" href="group___i_plug_utilities.html#ga027ce10e55fc63bbe14430bb99ac9042">Clip</a>(Q, 0.1, 100.0); }</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordtype">void</span> SetGain(<span class="keywordtype">double</span> gainDB) { mNewState.gain = <a class="code hl_function" href="group___i_plug_utilities.html#ga027ce10e55fc63bbe14430bb99ac9042">Clip</a>(gainDB, -36.0, 36.0); }</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">void</span> SetMode(EMode mode) { mNewState.mode = mode; }</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordtype">void</span> SetSampleRate(<span class="keywordtype">double</span> sampleRate) { mNewState.sampleRate = sampleRate; }</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">void</span> ProcessBlock(T** inputs, T** outputs, <span class="keywordtype">int</span> nChans, <span class="keywordtype">int</span> nFrames)</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> assert(nChans <= NC);</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span>(mState != mNewState)</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> UpdateCoefficients();</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> c = 0; c < nChans; c++)</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> {</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> s = 0; s < nFrames; s++)</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> {</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">const</span> <span class="keywordtype">double</span> v0 = <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(inputs[c][s]);</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> mV3[c] = v0 - mIc2eq[c];</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> mV1[c] = m_a1 * mIc1eq[c] + m_a2*mV3[c];</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> mV2[c] = mIc2eq[c] + m_a2 * mIc1eq[c] + m_a3 * mV3[c];</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> mIc1eq[c] = 2.0 * mV1[c] - mIc1eq[c];</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> mIc2eq[c] = 2.0 * mV2[c] - mIc2eq[c];</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> outputs[c][s] = <span class="keyword">static_cast<</span>T<span class="keyword">></span>(m_m0) * <span class="keyword">static_cast<</span>T<span class="keyword">></span>(v0) + </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">static_cast<</span>T<span class="keyword">></span>(m_m1) * <span class="keyword">static_cast<</span>T<span class="keyword">></span>(mV1[c]) + </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">static_cast<</span>T<span class="keyword">></span>(m_m2) * <span class="keyword">static_cast<</span>T<span class="keyword">></span>(mV2[c]);</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> }</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> }</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> }</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordtype">void</span> Reset()</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> {</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> c = 0; c < NC; c++)</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> {</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> mV1[c] = 0.;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> mV2[c] = 0.;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> mV3[c] = 0.;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> mIc1eq[c] = 0.;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> mIc2eq[c] = 0.;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordtype">void</span> UpdateCoefficients()</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> {</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> mState = mNewState;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">const</span> <span class="keywordtype">double</span> w = std::tan(PI * mState.freq/mState.sampleRate);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">switch</span>(mState.mode)</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> {</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">case</span> kLowPass:</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> {</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> m_m0 = 0;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> m_m1 = 0;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> m_m2 = 1.;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> }</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">case</span> kHighPass:</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> {</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> m_m0 = 1.;</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> m_m1 = -k;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> m_m2 = -1.;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> }</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keywordflow">case</span> kBandPass:</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> {</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> m_m0 = 0.;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> m_m1 = 1.;</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> m_m2 = 0.;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> }</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keywordflow">case</span> kNotch:</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> {</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> m_m0 = 1.;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> m_m1 = -k;</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> m_m2 = 0.;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> }</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keywordflow">case</span> kPeak:</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> {</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> m_m0 = 1.;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> m_m1 = -k;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> m_m2 = -2.;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> }</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keywordflow">case</span> kBell:</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> {</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">const</span> <span class="keywordtype">double</span> A = std::pow(10., mState.gain/40.);</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1 / mState.Q;</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> m_m0 = 1.;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> m_m1 = k * (A * A - 1.);</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> m_m2 = 0.;</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> }</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keywordflow">case</span> kLowPassShelf:</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> {</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">const</span> <span class="keywordtype">double</span> A = std::pow(10., mState.gain/40.);</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w / std::sqrt(A);</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> m_m0 = 1.;</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> m_m1 = k * (A - 1.);</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> m_m2 = (A * A - 1.);</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> }</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> <span class="keywordflow">case</span> kHighPassShelf:</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> {</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">const</span> <span class="keywordtype">double</span> A = std::pow(10., mState.gain/40.);</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">const</span> <span class="keywordtype">double</span> g = w / std::sqrt(A);</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> <span class="keyword">const</span> <span class="keywordtype">double</span> k = 1. / mState.Q;</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> m_a1 = 1./(1. + g * (g + k));</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> m_a2 = g * m_a1;</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> m_a3 = g * m_a2;</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> m_m0 = A*A;</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> m_m1 = k*(1. - A)*A;</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> m_m2 = (1. - A*A);</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> }</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> }</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> }</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> </div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> <span class="keywordtype">double</span> mV1[NC] = {};</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="keywordtype">double</span> mV2[NC] = {};</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="keywordtype">double</span> mV3[NC] = {};</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="keywordtype">double</span> mIc1eq[NC] = {};</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> <span class="keywordtype">double</span> mIc2eq[NC] = {};</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> <span class="keywordtype">double</span> m_a1 = 0.;</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> <span class="keywordtype">double</span> m_a2 = 0.;</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="keywordtype">double</span> m_a3 = 0.;</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordtype">double</span> m_m0 = 0.;</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <span class="keywordtype">double</span> m_m1 = 0.;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="keywordtype">double</span> m_m2 = 0.;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> </div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="keyword">struct </span>Settings</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> {</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> EMode mode;</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="keywordtype">double</span> freq = 1000.;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> <span class="keywordtype">double</span> Q = 0.1;</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="keywordtype">double</span> gain = 1.;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="keywordtype">double</span> sampleRate = 44100.;</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keywordtype">bool</span> operator != (<span class="keyword">const</span> Settings &other)<span class="keyword"> const</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keywordflow">return</span> !(mode == other.mode && freq == other.freq && Q == other.Q && gain == other.gain && sampleRate == other.sampleRate);</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> }</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> } WDL_FIXALIGN;</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> </div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> Settings mState, mNewState;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span>} WDL_FIXALIGN;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span>END_IPLUG_NAMESPACE</div>
<div class="ttc" id="a_i_plug_platform_8h_html"><div class="ttname"><a href="_i_plug_platform_8h.html">IPlugPlatform.h</a></div><div class="ttdoc">Include to get consistently named preprocessor macros for different platforms and logging functionali...</div></div>
<div class="ttc" id="aclass_s_v_f_html"><div class="ttname"><a href="class_s_v_f.html">SVF</a></div><div class="ttdef"><b>Definition:</b> <a href="_s_v_f_8h_source.html#l00028">SVF.h:29</a></div></div>
<div class="ttc" id="agroup___i_plug_utilities_html_ga027ce10e55fc63bbe14430bb99ac9042"><div class="ttname"><a href="group___i_plug_utilities.html#ga027ce10e55fc63bbe14430bb99ac9042">Clip</a></div><div class="ttdeci">BEGIN_IPLUG_NAMESPACE T Clip(T x, T lo, T hi)</div><div class="ttdoc">Clips the value x between lo and hi.</div><div class="ttdef"><b>Definition:</b> <a href="_i_plug_utilities_8h_source.html#l00049">IPlugUtilities.h:49</a></div></div>
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