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Release 4.4.3 tarball
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Gary Scavone
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Stephen Sinclair
Stephen Sinclair
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cfdfe7736a
commit
f13d5bb3cd
@@ -9,7 +9,7 @@
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<!-- Generated by Doxygen 1.6.2 -->
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<div class="navpath"><a class="el" href="dir_ca1e4533604ab7cb0cdaaff730a9c38f.html">include</a>
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<div class="navpath"><a class="el" href="dir_f14fd23bc74c76f288031ad23b3f3505.html">include</a>
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<div class="contents">
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<h1>BiQuad.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_BIQUAD_H</span>
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@@ -45,103 +45,103 @@
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<a name="l00049"></a><a class="code" href="classstk_1_1BiQuad.html#ae28afd560df11435ea54f128d23b9383">00049</a> <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#ae28afd560df11435ea54f128d23b9383" title="Set the a[2] coefficient value.">setA2</a>( StkFloat a2 ) { a_[2] = a2; };
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<a name="l00050"></a>00050
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||||
<a name="l00052"></a>00052
|
||||
<a name="l00063"></a>00063 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a55aaa01fd4156f1fac1168f526e3d969" title="Sets the filter coefficients for a resonance at frequency (in Hz).">setResonance</a>( StkFloat frequency, StkFloat radius, <span class="keywordtype">bool</span> normalize = <span class="keyword">false</span> );
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||||
<a name="l00064"></a>00064
|
||||
<a name="l00065"></a>00065 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a55aaa01fd4156f1fac1168f526e3d969" title="Sets the filter coefficients for a resonance at frequency (in Hz).">setResonance</a>( StkFloat frequency, StkFloat radius, <span class="keywordtype">bool</span> normalize = <span class="keyword">false</span> );
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||||
<a name="l00066"></a>00066
|
||||
<a name="l00072"></a>00072 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#ae10a26fc319ba357bc92df4e528c2d8f" title="Set the filter coefficients for a notch at frequency (in Hz).">setNotch</a>( StkFloat frequency, StkFloat radius );
|
||||
<a name="l00073"></a>00073
|
||||
<a name="l00075"></a>00075
|
||||
<a name="l00081"></a>00081 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a28881f5876ce5bdcc846367cca9363f7" title="Sets the filter zeroes for equal resonance gain.">setEqualGainZeroes</a>( <span class="keywordtype">void</span> );
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<a name="l00082"></a>00082
|
||||
<a name="l00084"></a><a class="code" href="classstk_1_1BiQuad.html#a412f224363b1a222423ecf0cd7be9063">00084</a> StkFloat <a class="code" href="classstk_1_1BiQuad.html#a412f224363b1a222423ecf0cd7be9063" title="Return the last computed output value.">lastOut</a>( <span class="keywordtype">void</span> )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> lastFrame_[0]; };
|
||||
<a name="l00068"></a>00068
|
||||
<a name="l00075"></a>00075 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#ae10a26fc319ba357bc92df4e528c2d8f" title="Set the filter coefficients for a notch at frequency (in Hz).">setNotch</a>( StkFloat frequency, StkFloat radius );
|
||||
<a name="l00076"></a>00076
|
||||
<a name="l00078"></a>00078
|
||||
<a name="l00084"></a>00084 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BiQuad.html#a28881f5876ce5bdcc846367cca9363f7" title="Sets the filter zeroes for equal resonance gain.">setEqualGainZeroes</a>( <span class="keywordtype">void</span> );
|
||||
<a name="l00085"></a>00085
|
||||
<a name="l00087"></a>00087 StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( StkFloat input );
|
||||
<a name="l00087"></a><a class="code" href="classstk_1_1BiQuad.html#a412f224363b1a222423ecf0cd7be9063">00087</a> StkFloat <a class="code" href="classstk_1_1BiQuad.html#a412f224363b1a222423ecf0cd7be9063" title="Return the last computed output value.">lastOut</a>( <span class="keywordtype">void</span> )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> lastFrame_[0]; };
|
||||
<a name="l00088"></a>00088
|
||||
<a name="l00090"></a>00090
|
||||
<a name="l00098"></a>00098 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
|
||||
<a name="l00099"></a>00099
|
||||
<a name="l00101"></a>00101
|
||||
<a name="l00109"></a>00109 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">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 );
|
||||
<a name="l00110"></a>00110
|
||||
<a name="l00111"></a>00111 <span class="keyword">protected</span>:
|
||||
<a name="l00112"></a>00112
|
||||
<a name="l00113"></a>00113 <span class="keyword">virtual</span> <span class="keywordtype">void</span> sampleRateChanged( StkFloat newRate, StkFloat oldRate );
|
||||
<a name="l00114"></a>00114 };
|
||||
<a name="l00090"></a>00090 StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( StkFloat input );
|
||||
<a name="l00091"></a>00091
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00101"></a>00101 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
|
||||
<a name="l00102"></a>00102
|
||||
<a name="l00104"></a>00104
|
||||
<a name="l00112"></a>00112 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">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 );
|
||||
<a name="l00113"></a>00113
|
||||
<a name="l00114"></a>00114 <span class="keyword">protected</span>:
|
||||
<a name="l00115"></a>00115
|
||||
<a name="l00116"></a><a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">00116</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( StkFloat input )
|
||||
<a name="l00117"></a>00117 {
|
||||
<a name="l00118"></a>00118 inputs_[0] = gain_ * input;
|
||||
<a name="l00119"></a>00119 lastFrame_[0] = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00120"></a>00120 lastFrame_[0] -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00121"></a>00121 inputs_[2] = inputs_[1];
|
||||
<a name="l00122"></a>00122 inputs_[1] = inputs_[0];
|
||||
<a name="l00123"></a>00123 outputs_[2] = outputs_[1];
|
||||
<a name="l00124"></a>00124 outputs_[1] = lastFrame_[0];
|
||||
<a name="l00125"></a>00125
|
||||
<a name="l00126"></a>00126 <span class="keywordflow">return</span> lastFrame_[0];
|
||||
<a name="l00127"></a>00127 }
|
||||
<a name="l00116"></a>00116 <span class="keyword">virtual</span> <span class="keywordtype">void</span> sampleRateChanged( StkFloat newRate, StkFloat oldRate );
|
||||
<a name="l00117"></a>00117 };
|
||||
<a name="l00118"></a>00118
|
||||
<a name="l00119"></a><a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635">00119</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( StkFloat input )
|
||||
<a name="l00120"></a>00120 {
|
||||
<a name="l00121"></a>00121 inputs_[0] = gain_ * input;
|
||||
<a name="l00122"></a>00122 lastFrame_[0] = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00123"></a>00123 lastFrame_[0] -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00124"></a>00124 inputs_[2] = inputs_[1];
|
||||
<a name="l00125"></a>00125 inputs_[1] = inputs_[0];
|
||||
<a name="l00126"></a>00126 outputs_[2] = outputs_[1];
|
||||
<a name="l00127"></a>00127 outputs_[1] = lastFrame_[0];
|
||||
<a name="l00128"></a>00128
|
||||
<a name="l00129"></a><a class="code" href="classstk_1_1BiQuad.html#af903e41217838470a5f267a20b905a12">00129</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
|
||||
<a name="l00130"></a>00130 {
|
||||
<a name="l00131"></a>00131 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
|
||||
<a name="l00132"></a>00132 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel >= frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() ) {
|
||||
<a name="l00133"></a>00133 errorString_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;
|
||||
<a name="l00134"></a>00134 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
|
||||
<a name="l00135"></a>00135 }
|
||||
<a name="l00136"></a>00136 <span class="preprocessor">#endif</span>
|
||||
<a name="l00137"></a>00137 <span class="preprocessor"></span>
|
||||
<a name="l00138"></a>00138 StkFloat *samples = &frames[channel];
|
||||
<a name="l00139"></a>00139 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
|
||||
<a name="l00140"></a>00140 <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#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop ) {
|
||||
<a name="l00141"></a>00141 inputs_[0] = gain_ * *samples;
|
||||
<a name="l00142"></a>00142 *samples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00143"></a>00143 *samples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00144"></a>00144 inputs_[2] = inputs_[1];
|
||||
<a name="l00145"></a>00145 inputs_[1] = inputs_[0];
|
||||
<a name="l00146"></a>00146 outputs_[2] = outputs_[1];
|
||||
<a name="l00147"></a>00147 outputs_[1] = *samples;
|
||||
<a name="l00148"></a>00148 }
|
||||
<a name="l00149"></a>00149
|
||||
<a name="l00150"></a>00150 lastFrame_[0] = outputs_[1];
|
||||
<a name="l00151"></a>00151 <span class="keywordflow">return</span> frames;
|
||||
<a name="l00152"></a>00152 }
|
||||
<a name="l00153"></a>00153
|
||||
<a name="l00154"></a><a class="code" href="classstk_1_1BiQuad.html#ac9836f0e074ea9516727f27eb9b411aa">00154</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">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 )
|
||||
<a name="l00155"></a>00155 {
|
||||
<a name="l00156"></a>00156 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
|
||||
<a name="l00157"></a>00157 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( iChannel >= iFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() || oChannel >= oFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() ) {
|
||||
<a name="l00158"></a>00158 errorString_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;
|
||||
<a name="l00159"></a>00159 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
|
||||
<a name="l00160"></a>00160 }
|
||||
<a name="l00161"></a>00161 <span class="preprocessor">#endif</span>
|
||||
<a name="l00162"></a>00162 <span class="preprocessor"></span>
|
||||
<a name="l00163"></a>00163 StkFloat *iSamples = &iFrames[iChannel];
|
||||
<a name="l00164"></a>00164 StkFloat *oSamples = &oFrames[oChannel];
|
||||
<a name="l00165"></a>00165 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iHop = iFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>(), oHop = oFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
|
||||
<a name="l00166"></a>00166 <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#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, iSamples += iHop, oSamples += oHop ) {
|
||||
<a name="l00167"></a>00167 inputs_[0] = gain_ * *iSamples;
|
||||
<a name="l00168"></a>00168 *oSamples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00169"></a>00169 *oSamples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00170"></a>00170 inputs_[2] = inputs_[1];
|
||||
<a name="l00171"></a>00171 inputs_[1] = inputs_[0];
|
||||
<a name="l00172"></a>00172 outputs_[2] = outputs_[1];
|
||||
<a name="l00173"></a>00173 outputs_[1] = *oSamples;
|
||||
<a name="l00174"></a>00174 }
|
||||
<a name="l00175"></a>00175
|
||||
<a name="l00176"></a>00176 lastFrame_[0] = outputs_[1];
|
||||
<a name="l00177"></a>00177 <span class="keywordflow">return</span> iFrames;
|
||||
<a name="l00178"></a>00178 }
|
||||
<a name="l00179"></a>00179
|
||||
<a name="l00180"></a>00180 } <span class="comment">// stk namespace</span>
|
||||
<a name="l00181"></a>00181
|
||||
<a name="l00182"></a>00182 <span class="preprocessor">#endif</span>
|
||||
<a name="l00183"></a>00183 <span class="preprocessor"></span>
|
||||
<a name="l00129"></a>00129 <span class="keywordflow">return</span> lastFrame_[0];
|
||||
<a name="l00130"></a>00130 }
|
||||
<a name="l00131"></a>00131
|
||||
<a name="l00132"></a><a class="code" href="classstk_1_1BiQuad.html#af903e41217838470a5f267a20b905a12">00132</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
|
||||
<a name="l00133"></a>00133 {
|
||||
<a name="l00134"></a>00134 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
|
||||
<a name="l00135"></a>00135 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel >= frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() ) {
|
||||
<a name="l00136"></a>00136 oStream_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;
|
||||
<a name="l00137"></a>00137 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
|
||||
<a name="l00138"></a>00138 }
|
||||
<a name="l00139"></a>00139 <span class="preprocessor">#endif</span>
|
||||
<a name="l00140"></a>00140 <span class="preprocessor"></span>
|
||||
<a name="l00141"></a>00141 StkFloat *samples = &frames[channel];
|
||||
<a name="l00142"></a>00142 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
|
||||
<a name="l00143"></a>00143 <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#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop ) {
|
||||
<a name="l00144"></a>00144 inputs_[0] = gain_ * *samples;
|
||||
<a name="l00145"></a>00145 *samples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00146"></a>00146 *samples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00147"></a>00147 inputs_[2] = inputs_[1];
|
||||
<a name="l00148"></a>00148 inputs_[1] = inputs_[0];
|
||||
<a name="l00149"></a>00149 outputs_[2] = outputs_[1];
|
||||
<a name="l00150"></a>00150 outputs_[1] = *samples;
|
||||
<a name="l00151"></a>00151 }
|
||||
<a name="l00152"></a>00152
|
||||
<a name="l00153"></a>00153 lastFrame_[0] = outputs_[1];
|
||||
<a name="l00154"></a>00154 <span class="keywordflow">return</span> frames;
|
||||
<a name="l00155"></a>00155 }
|
||||
<a name="l00156"></a>00156
|
||||
<a name="l00157"></a><a class="code" href="classstk_1_1BiQuad.html#ac9836f0e074ea9516727f27eb9b411aa">00157</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">BiQuad :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& iFrames, <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">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 )
|
||||
<a name="l00158"></a>00158 {
|
||||
<a name="l00159"></a>00159 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
|
||||
<a name="l00160"></a>00160 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( iChannel >= iFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() || oChannel >= oFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() ) {
|
||||
<a name="l00161"></a>00161 oStream_ << <span class="stringliteral">"BiQuad::tick(): channel and StkFrames arguments are incompatible!"</span>;
|
||||
<a name="l00162"></a>00162 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
|
||||
<a name="l00163"></a>00163 }
|
||||
<a name="l00164"></a>00164 <span class="preprocessor">#endif</span>
|
||||
<a name="l00165"></a>00165 <span class="preprocessor"></span>
|
||||
<a name="l00166"></a>00166 StkFloat *iSamples = &iFrames[iChannel];
|
||||
<a name="l00167"></a>00167 StkFloat *oSamples = &oFrames[oChannel];
|
||||
<a name="l00168"></a>00168 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iHop = iFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>(), oHop = oFrames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
|
||||
<a name="l00169"></a>00169 <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#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, iSamples += iHop, oSamples += oHop ) {
|
||||
<a name="l00170"></a>00170 inputs_[0] = gain_ * *iSamples;
|
||||
<a name="l00171"></a>00171 *oSamples = b_[0] * inputs_[0] + b_[1] * inputs_[1] + b_[2] * inputs_[2];
|
||||
<a name="l00172"></a>00172 *oSamples -= a_[2] * outputs_[2] + a_[1] * outputs_[1];
|
||||
<a name="l00173"></a>00173 inputs_[2] = inputs_[1];
|
||||
<a name="l00174"></a>00174 inputs_[1] = inputs_[0];
|
||||
<a name="l00175"></a>00175 outputs_[2] = outputs_[1];
|
||||
<a name="l00176"></a>00176 outputs_[1] = *oSamples;
|
||||
<a name="l00177"></a>00177 }
|
||||
<a name="l00178"></a>00178
|
||||
<a name="l00179"></a>00179 lastFrame_[0] = outputs_[1];
|
||||
<a name="l00180"></a>00180 <span class="keywordflow">return</span> iFrames;
|
||||
<a name="l00181"></a>00181 }
|
||||
<a name="l00182"></a>00182
|
||||
<a name="l00183"></a>00183 } <span class="comment">// stk namespace</span>
|
||||
<a name="l00184"></a>00184
|
||||
<a name="l00185"></a>00185 <span class="preprocessor">#endif</span>
|
||||
<a name="l00186"></a>00186 <span class="preprocessor"></span>
|
||||
</pre></div></div>
|
||||
<HR>
|
||||
|
||||
<table>
|
||||
<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
|
||||
<tr><td>©1995-2010 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
|
||||
<tr><td>©1995-2011 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
|
||||
</table>
|
||||
|
||||
</BODY>
|
||||
|
||||
Reference in New Issue
Block a user