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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Arduino STK: BiQuad.h Source File</title>
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<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Arduino STK
 <span id="projectnumber">4.6.2</span>
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<div class="title">BiQuad.h</div> </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef STK_BIQUAD_H</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define STK_BIQUAD_H</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "Filter.h"</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="keyword">namespace </span><a class="code" href="namespacestk.html">stk</a> {</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">/***************************************************/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">/***************************************************/</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html"> 20</a></span> <span class="keyword">class </span><a class="code" href="classstk_1_1BiQuad.html">BiQuad</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Filter.html">Filter</a></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> {</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a91aab9d1b4833e156edcf59cbe276e3f"> 25</a></span>  <a class="code" href="classstk_1_1BiQuad.html#a91aab9d1b4833e156edcf59cbe276e3f">BiQuad</a>();</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#ad7e81be1c4e5c5ab69474f6df2610984"> 28</a></span>  <a class="code" href="classstk_1_1BiQuad.html#ad7e81be1c4e5c5ab69474f6df2610984">~BiQuad</a>();</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#aab468cd1aa79b95442b15bb04d8bb211"> 31</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#aab468cd1aa79b95442b15bb04d8bb211">ignoreSampleRateChange</a>( <span class="keywordtype">bool</span> ignore = <span class="keyword">true</span> ) { ignoreSampleRateChange_ = ignore; };</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#aeed58196cf798f664cddbb9a8564c7b5"> 34</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#aeed58196cf798f664cddbb9a8564c7b5">setCoefficients</a>( StkFloat b0, StkFloat b1, StkFloat b2, StkFloat a1, StkFloat a2, <span class="keywordtype">bool</span> clearState = <span class="keyword">false</span> );</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a26ee25d08116b20f326001166f087853"> 37</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a26ee25d08116b20f326001166f087853">setB0</a>( StkFloat b0 ) { b_[0] = b0; };</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#add364ed410b3ed2a2b29b8a5fea127c8"> 40</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#add364ed410b3ed2a2b29b8a5fea127c8">setB1</a>( StkFloat b1 ) { b_[1] = b1; };</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a208a654dd3393ed0b2b86ad56d9cf3e1"> 43</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a208a654dd3393ed0b2b86ad56d9cf3e1">setB2</a>( StkFloat b2 ) { b_[2] = b2; };</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a1c9799e47163fe8a59fd85196c089cb3"> 46</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a1c9799e47163fe8a59fd85196c089cb3">setA1</a>( StkFloat a1 ) { a_[1] = a1; };</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#ae28afd560df11435ea54f128d23b9383"> 49</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#ae28afd560df11435ea54f128d23b9383">setA2</a>( StkFloat a2 ) { a_[2] = a2; };</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a55aaa01fd4156f1fac1168f526e3d969"> 65</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a55aaa01fd4156f1fac1168f526e3d969">setResonance</a>( StkFloat frequency, StkFloat radius, <span class="keywordtype">bool</span> normalize = <span class="keyword">false</span> );</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#ae10a26fc319ba357bc92df4e528c2d8f"> 75</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#ae10a26fc319ba357bc92df4e528c2d8f">setNotch</a>( StkFloat frequency, StkFloat radius );</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a28881f5876ce5bdcc846367cca9363f7"> 84</a></span>  <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a28881f5876ce5bdcc846367cca9363f7">setEqualGainZeroes</a>( <span class="keywordtype">void</span> );</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#ac7f8d4e6e77ae3740e03f5f2af93d496"> 87</a></span>  StkFloat <a class="code" href="classstk_1_1BiQuad.html#ac7f8d4e6e77ae3740e03f5f2af93d496">lastOut</a>( <span class="keywordtype">void</span> )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> lastFrame_[0]; };</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">tick</a>( StkFloat input );</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">tick</a>( <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">tick</a>( <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a> &oFrames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iChannel = 0, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oChannel = 0 );</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> sampleRateChanged( StkFloat newRate, StkFloat oldRate );</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> };</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635"> 119</a></span> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">BiQuad :: tick</a>( StkFloat input )</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  inputs_[0] = gain_ * input;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  lastFrame_[0] = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  lastFrame_[0] -= a_[2] * outputs_[2] + a_[1] * outputs_[1];</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  inputs_[2] = inputs_[1];</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  inputs_[1] = inputs_[0];</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  outputs_[2] = outputs_[1];</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  outputs_[1] = lastFrame_[0];</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> lastFrame_[0];</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#af903e41217838470a5f267a20b905a12"> 132</a></span> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#if defined(_STK_DEBUG_)</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">if</span> ( channel >= frames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>() ) {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  oStream_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff">handleError</a>( StkError::FUNCTION_ARGUMENT );</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  StkFloat *samples = &frames[channel];</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> hop = frames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>();</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a0fc22e21feecdee966f0203722b9c168">frames</a>(); i++, samples += hop ) {</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  inputs_[0] = gain_ * *samples;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  *samples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  *samples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  inputs_[2] = inputs_[1];</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  inputs_[1] = inputs_[0];</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  outputs_[2] = outputs_[1];</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  outputs_[1] = *samples;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  lastFrame_[0] = outputs_[1];</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> frames;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> }</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classstk_1_1BiQuad.html#ac9836f0e074ea9516727f27eb9b411aa"> 157</a></span> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html">StkFrames</a>& oFrames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oChannel )</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor">#if defined(_STK_DEBUG_)</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> ( iChannel >= iFrames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>() || oChannel >= oFrames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>() ) {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  oStream_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff">handleError</a>( StkError::FUNCTION_ARGUMENT );</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  StkFloat *iSamples = &iFrames[iChannel];</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  StkFloat *oSamples = &oFrames[oChannel];</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iHop = iFrames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>(), oHop = oFrames.<a class="code" href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">channels</a>();</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<iFrames.<a class="code" href="classstk_1_1StkFrames.html#a0fc22e21feecdee966f0203722b9c168">frames</a>(); i++, iSamples += iHop, oSamples += oHop ) {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  inputs_[0] = gain_ * *iSamples;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  *oSamples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  *oSamples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  inputs_[2] = inputs_[1];</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  inputs_[1] = inputs_[0];</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  outputs_[2] = outputs_[1];</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  outputs_[1] = *oSamples;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  lastFrame_[0] = outputs_[1];</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> iFrames;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> } <span class="comment">// stk namespace</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
<div class="ttc" id="aclassstk_1_1BiQuad_html"><div class="ttname"><a href="classstk_1_1BiQuad.html">stk::BiQuad</a></div><div class="ttdoc">STK biquad (two-pole, two-zero) filter class.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:21</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a1c9799e47163fe8a59fd85196c089cb3"><div class="ttname"><a href="classstk_1_1BiQuad.html#a1c9799e47163fe8a59fd85196c089cb3">stk::BiQuad::setA1</a></div><div class="ttdeci">void setA1(StkFloat a1)</div><div class="ttdoc">Set the a[1] coefficient value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:46</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a208a654dd3393ed0b2b86ad56d9cf3e1"><div class="ttname"><a href="classstk_1_1BiQuad.html#a208a654dd3393ed0b2b86ad56d9cf3e1">stk::BiQuad::setB2</a></div><div class="ttdeci">void setB2(StkFloat b2)</div><div class="ttdoc">Set the b[2] coefficient value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:43</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a26ee25d08116b20f326001166f087853"><div class="ttname"><a href="classstk_1_1BiQuad.html#a26ee25d08116b20f326001166f087853">stk::BiQuad::setB0</a></div><div class="ttdeci">void setB0(StkFloat b0)</div><div class="ttdoc">Set the b[0] coefficient value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:37</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a28881f5876ce5bdcc846367cca9363f7"><div class="ttname"><a href="classstk_1_1BiQuad.html#a28881f5876ce5bdcc846367cca9363f7">stk::BiQuad::setEqualGainZeroes</a></div><div class="ttdeci">void setEqualGainZeroes(void)</div><div class="ttdoc">Sets the filter zeroes for equal resonance gain.</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a55aaa01fd4156f1fac1168f526e3d969"><div class="ttname"><a href="classstk_1_1BiQuad.html#a55aaa01fd4156f1fac1168f526e3d969">stk::BiQuad::setResonance</a></div><div class="ttdeci">void setResonance(StkFloat frequency, StkFloat radius, bool normalize=false)</div><div class="ttdoc">Sets the filter coefficients for a resonance at frequency (in Hz).</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a648086962c3cddcaa09c46a002c3e635"><div class="ttname"><a href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">stk::BiQuad::tick</a></div><div class="ttdeci">StkFloat tick(StkFloat input)</div><div class="ttdoc">Input one sample to the filter and return a reference to one output.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:119</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_a91aab9d1b4833e156edcf59cbe276e3f"><div class="ttname"><a href="classstk_1_1BiQuad.html#a91aab9d1b4833e156edcf59cbe276e3f">stk::BiQuad::BiQuad</a></div><div class="ttdeci">BiQuad()</div><div class="ttdoc">Default constructor creates a second-order pass-through filter.</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_aab468cd1aa79b95442b15bb04d8bb211"><div class="ttname"><a href="classstk_1_1BiQuad.html#aab468cd1aa79b95442b15bb04d8bb211">stk::BiQuad::ignoreSampleRateChange</a></div><div class="ttdeci">void ignoreSampleRateChange(bool ignore=true)</div><div class="ttdoc">A function to enable/disable the automatic updating of class data when the STK sample rate changes.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:31</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_ac7f8d4e6e77ae3740e03f5f2af93d496"><div class="ttname"><a href="classstk_1_1BiQuad.html#ac7f8d4e6e77ae3740e03f5f2af93d496">stk::BiQuad::lastOut</a></div><div class="ttdeci">StkFloat lastOut(void) const</div><div class="ttdoc">Return the last computed output value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:87</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_ad7e81be1c4e5c5ab69474f6df2610984"><div class="ttname"><a href="classstk_1_1BiQuad.html#ad7e81be1c4e5c5ab69474f6df2610984">stk::BiQuad::~BiQuad</a></div><div class="ttdeci">~BiQuad()</div><div class="ttdoc">Class destructor.</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_add364ed410b3ed2a2b29b8a5fea127c8"><div class="ttname"><a href="classstk_1_1BiQuad.html#add364ed410b3ed2a2b29b8a5fea127c8">stk::BiQuad::setB1</a></div><div class="ttdeci">void setB1(StkFloat b1)</div><div class="ttdoc">Set the b[1] coefficient value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:40</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_ae10a26fc319ba357bc92df4e528c2d8f"><div class="ttname"><a href="classstk_1_1BiQuad.html#ae10a26fc319ba357bc92df4e528c2d8f">stk::BiQuad::setNotch</a></div><div class="ttdeci">void setNotch(StkFloat frequency, StkFloat radius)</div><div class="ttdoc">Set the filter coefficients for a notch at frequency (in Hz).</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_ae28afd560df11435ea54f128d23b9383"><div class="ttname"><a href="classstk_1_1BiQuad.html#ae28afd560df11435ea54f128d23b9383">stk::BiQuad::setA2</a></div><div class="ttdeci">void setA2(StkFloat a2)</div><div class="ttdoc">Set the a[2] coefficient value.</div><div class="ttdef"><b>Definition:</b> BiQuad.h:49</div></div>
<div class="ttc" id="aclassstk_1_1BiQuad_html_aeed58196cf798f664cddbb9a8564c7b5"><div class="ttname"><a href="classstk_1_1BiQuad.html#aeed58196cf798f664cddbb9a8564c7b5">stk::BiQuad::setCoefficients</a></div><div class="ttdeci">void setCoefficients(StkFloat b0, StkFloat b1, StkFloat b2, StkFloat a1, StkFloat a2, bool clearState=false)</div><div class="ttdoc">Set all filter coefficients.</div></div>
<div class="ttc" id="aclassstk_1_1Filter_html"><div class="ttname"><a href="classstk_1_1Filter.html">stk::Filter</a></div><div class="ttdoc">STK abstract filter class.</div><div class="ttdef"><b>Definition:</b> Filter.h:23</div></div>
<div class="ttc" id="aclassstk_1_1StkFrames_html"><div class="ttname"><a href="classstk_1_1StkFrames.html">stk::StkFrames</a></div><div class="ttdoc">An STK class to handle vectorized audio data.</div><div class="ttdef"><b>Definition:</b> Stk.h:287</div></div>
<div class="ttc" id="aclassstk_1_1StkFrames_html_a0340d9e76707282658e49509a568f60e"><div class="ttname"><a href="classstk_1_1StkFrames.html#a0340d9e76707282658e49509a568f60e">stk::StkFrames::channels</a></div><div class="ttdeci">unsigned int channels(void) const</div><div class="ttdoc">Return the number of channels represented by the data.</div><div class="ttdef"><b>Definition:</b> Stk.h:415</div></div>
<div class="ttc" id="aclassstk_1_1StkFrames_html_a0fc22e21feecdee966f0203722b9c168"><div class="ttname"><a href="classstk_1_1StkFrames.html#a0fc22e21feecdee966f0203722b9c168">stk::StkFrames::frames</a></div><div class="ttdeci">unsigned int frames(void) const</div><div class="ttdoc">Return the number of sample frames represented by the data.</div><div class="ttdef"><b>Definition:</b> Stk.h:418</div></div>
<div class="ttc" id="aclassstk_1_1Stk_html_a48ac73a0d8ca28445ba1a054e1f061ff"><div class="ttname"><a href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff">stk::Stk::handleError</a></div><div class="ttdeci">static void handleError(const char *message, StkError::Type type)</div><div class="ttdoc">Static function for error reporting and handling using c-strings.</div></div>
<div class="ttc" id="anamespacestk_html"><div class="ttname"><a href="namespacestk.html">stk</a></div><div class="ttdoc">The STK namespace.</div><div class="ttdef"><b>Definition:</b> ADSR.h:8</div></div>
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