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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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@@ -9,7 +9,7 @@
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<h1>Clarinet.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_CLARINET_H</span>
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@@ -32,7 +32,7 @@
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<a name="l00039"></a>00039 {
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<a name="l00040"></a>00040 <span class="keyword">public</span>:
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<a name="l00042"></a>00042
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<a name="l00045"></a>00045 <a class="code" href="classstk_1_1Clarinet.html#a82e32a30e6d9664ac9fe748070bec23c" title="Class constructor, taking the lowest desired playing frequency.">Clarinet</a>( StkFloat lowestFrequency );
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<a name="l00045"></a>00045 <a class="code" href="classstk_1_1Clarinet.html#aad5cf9fb562ee87f2dc0aed0b4cd6c5b" title="Class constructor, taking the lowest desired playing frequency.">Clarinet</a>( StkFloat lowestFrequency = 8.0 );
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<a name="l00046"></a>00046
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<a name="l00048"></a>00048 <a class="code" href="classstk_1_1Clarinet.html#a5166db9f4cf180fa189ba2e135affe34" title="Class destructor.">~Clarinet</a>( <span class="keywordtype">void</span> );
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<a name="l00049"></a>00049
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@@ -52,55 +52,84 @@
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<a name="l00070"></a>00070
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<a name="l00072"></a>00072 StkFloat <a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
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<a name="l00073"></a>00073
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<a name="l00074"></a>00074 <span class="keyword">protected</span>:
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<a name="l00075"></a>00075
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<a name="l00076"></a>00076 <a class="code" href="classstk_1_1DelayL.html" title="STK linear interpolating delay line class.">DelayL</a> delayLine_;
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<a name="l00077"></a>00077 <a class="code" href="classstk_1_1ReedTable.html" title="STK reed table class.">ReedTable</a> reedTable_;
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<a name="l00078"></a>00078 <a class="code" href="classstk_1_1OneZero.html" title="STK one-zero filter class.">OneZero</a> filter_;
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<a name="l00079"></a>00079 <a class="code" href="classstk_1_1Envelope.html" title="STK linear line envelope class.">Envelope</a> envelope_;
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<a name="l00080"></a>00080 <a class="code" href="classstk_1_1Noise.html" title="STK noise generator.">Noise</a> noise_;
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<a name="l00081"></a>00081 <a class="code" href="classstk_1_1SineWave.html" title="STK sinusoid oscillator class.">SineWave</a> vibrato_;
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<a name="l00082"></a>00082 <span class="keywordtype">long</span> length_;
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<a name="l00083"></a>00083 StkFloat outputGain_;
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<a name="l00084"></a>00084 StkFloat noiseGain_;
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<a name="l00085"></a>00085 StkFloat vibratoGain_;
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087 };
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<a name="l00088"></a>00088
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<a name="l00089"></a><a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5">00089</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">Clarinet :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00090"></a>00090 {
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<a name="l00091"></a>00091 StkFloat pressureDiff;
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<a name="l00092"></a>00092 StkFloat breathPressure;
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<a name="l00093"></a>00093
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<a name="l00094"></a>00094 <span class="comment">// Calculate the breath pressure (envelope + noise + vibrato)</span>
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<a name="l00095"></a>00095 breathPressure = envelope_.<a class="code" href="classstk_1_1Envelope.html#a8de91b9caf10a03f52bd2247648c4601" title="Compute and return one output sample.">tick</a>();
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<a name="l00096"></a>00096 breathPressure += breathPressure * noiseGain_ * noise_.<a class="code" href="classstk_1_1Noise.html#a8ac40f69475eb744e803d557e8438a6d" title="Compute and return one output sample.">tick</a>();
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<a name="l00097"></a>00097 breathPressure += breathPressure * vibratoGain_ * vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>();
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<a name="l00098"></a>00098
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<a name="l00099"></a>00099 <span class="comment">// Perform commuted loss filtering.</span>
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<a name="l00100"></a>00100 pressureDiff = -0.95 * filter_.<a class="code" href="classstk_1_1OneZero.html#a9f52fa395257b15cb7351c6ccb2199da" title="Input one sample to the filter and return one output.">tick</a>( delayLine_.<a class="code" href="classstk_1_1DelayL.html#a16810ca38fab79276bb8ec51447623a9" title="Return the last computed output value.">lastOut</a>() );
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102 <span class="comment">// Calculate pressure difference of reflected and mouthpiece pressures.</span>
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<a name="l00103"></a>00103 pressureDiff = pressureDiff - breathPressure;
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<a name="l00104"></a>00104
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<a name="l00105"></a>00105 <span class="comment">// Perform non-linear scattering using pressure difference in reed function.</span>
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<a name="l00106"></a>00106 lastFrame_[0] = delayLine_.<a class="code" href="classstk_1_1DelayL.html#a1d01bbaf40cc20a0b70241bb8072da7f" title="Input one sample to the filter and return one output.">tick</a>(breathPressure + pressureDiff * reedTable_.<a class="code" href="classstk_1_1ReedTable.html#a3c1607ed5712e2ab010d8c5e55e431f2" title="Take one sample input and map to one sample of output.">tick</a>(pressureDiff));
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<a name="l00082"></a>00082 <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_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">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 );
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084 <span class="keyword">protected</span>:
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<a name="l00085"></a>00085
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<a name="l00086"></a>00086 <a class="code" href="classstk_1_1DelayL.html" title="STK linear interpolating delay line class.">DelayL</a> delayLine_;
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<a name="l00087"></a>00087 <a class="code" href="classstk_1_1ReedTable.html" title="STK reed table class.">ReedTable</a> reedTable_;
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<a name="l00088"></a>00088 <a class="code" href="classstk_1_1OneZero.html" title="STK one-zero filter class.">OneZero</a> filter_;
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<a name="l00089"></a>00089 <a class="code" href="classstk_1_1Envelope.html" title="STK linear line envelope class.">Envelope</a> envelope_;
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<a name="l00090"></a>00090 <a class="code" href="classstk_1_1Noise.html" title="STK noise generator.">Noise</a> noise_;
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<a name="l00091"></a>00091 <a class="code" href="classstk_1_1SineWave.html" title="STK sinusoid oscillator class.">SineWave</a> vibrato_;
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<a name="l00092"></a>00092
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<a name="l00093"></a>00093 StkFloat outputGain_;
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<a name="l00094"></a>00094 StkFloat noiseGain_;
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<a name="l00095"></a>00095 StkFloat vibratoGain_;
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<a name="l00096"></a>00096 };
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<a name="l00097"></a>00097
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<a name="l00098"></a><a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5">00098</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">Clarinet :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00099"></a>00099 {
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<a name="l00100"></a>00100 StkFloat pressureDiff;
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<a name="l00101"></a>00101 StkFloat breathPressure;
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<a name="l00102"></a>00102
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<a name="l00103"></a>00103 <span class="comment">// Calculate the breath pressure (envelope + noise + vibrato)</span>
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<a name="l00104"></a>00104 breathPressure = envelope_.<a class="code" href="classstk_1_1Envelope.html#a8de91b9caf10a03f52bd2247648c4601" title="Compute and return one output sample.">tick</a>();
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<a name="l00105"></a>00105 breathPressure += breathPressure * noiseGain_ * noise_.<a class="code" href="classstk_1_1Noise.html#a8ac40f69475eb744e803d557e8438a6d" title="Compute and return one output sample.">tick</a>();
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<a name="l00106"></a>00106 breathPressure += breathPressure * vibratoGain_ * vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>();
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<a name="l00107"></a>00107
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<a name="l00108"></a>00108 <span class="comment">// Apply output gain.</span>
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<a name="l00109"></a>00109 lastFrame_[0] *= outputGain_;
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<a name="l00108"></a>00108 <span class="comment">// Perform commuted loss filtering.</span>
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<a name="l00109"></a>00109 pressureDiff = -0.95 * filter_.<a class="code" href="classstk_1_1OneZero.html#a9f52fa395257b15cb7351c6ccb2199da" title="Input one sample to the filter and return one output.">tick</a>( delayLine_.<a class="code" href="classstk_1_1DelayL.html#a16810ca38fab79276bb8ec51447623a9" title="Return the last computed output value.">lastOut</a>() );
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<a name="l00110"></a>00110
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<a name="l00111"></a>00111 <span class="keywordflow">return</span> lastFrame_[0];
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<a name="l00112"></a>00112 }
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<a name="l00111"></a>00111 <span class="comment">// Calculate pressure difference of reflected and mouthpiece pressures.</span>
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<a name="l00112"></a>00112 pressureDiff = pressureDiff - breathPressure;
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<a name="l00113"></a>00113
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<a name="l00114"></a>00114 } <span class="comment">// stk namespace</span>
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<a name="l00115"></a>00115
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<a name="l00116"></a>00116 <span class="preprocessor">#endif</span>
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<a name="l00114"></a>00114 <span class="comment">// Perform non-linear scattering using pressure difference in reed function.</span>
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<a name="l00115"></a>00115 lastFrame_[0] = delayLine_.<a class="code" href="classstk_1_1DelayL.html#a1d01bbaf40cc20a0b70241bb8072da7f" title="Input one sample to the filter and return one output.">tick</a>(breathPressure + pressureDiff * reedTable_.<a class="code" href="classstk_1_1ReedTable.html#a3c1607ed5712e2ab010d8c5e55e431f2" title="Take one sample input and map to one sample of output.">tick</a>(pressureDiff));
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<a name="l00116"></a>00116
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<a name="l00117"></a>00117 <span class="comment">// Apply output gain.</span>
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<a name="l00118"></a>00118 lastFrame_[0] *= outputGain_;
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<a name="l00119"></a>00119
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<a name="l00120"></a>00120 <span class="keywordflow">return</span> lastFrame_[0];
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<a name="l00121"></a>00121 }
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<a name="l00122"></a>00122
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<a name="l00123"></a><a class="code" href="classstk_1_1Clarinet.html#a059174eb1ab84e306bfad1d8b5833548">00123</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_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">Clarinet :: 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 )
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<a name="l00124"></a>00124 {
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<a name="l00125"></a>00125 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChannels = lastFrame_.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
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<a name="l00126"></a>00126 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00127"></a>00127 <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>() - nChannels ) {
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<a name="l00128"></a>00128 oStream_ << <span class="stringliteral">"Clarinet::tick(): channel and StkFrames arguments are incompatible!"</span>;
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<a name="l00129"></a>00129 <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 );
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<a name="l00130"></a>00130 }
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<a name="l00131"></a>00131 <span class="preprocessor">#endif</span>
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<a name="l00132"></a>00132 <span class="preprocessor"></span>
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<a name="l00133"></a>00133 StkFloat *samples = &frames[channel];
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<a name="l00134"></a>00134 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j, hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels;
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<a name="l00135"></a>00135 <span class="keywordflow">if</span> ( nChannels == 1 ) {
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<a name="l00136"></a>00136 <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 )
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<a name="l00137"></a>00137 *samples++ = <a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">tick</a>();
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<a name="l00138"></a>00138 }
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<a name="l00139"></a>00139 <span class="keywordflow">else</span> {
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<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 ) {
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<a name="l00141"></a>00141 *samples++ = <a class="code" href="classstk_1_1Clarinet.html#a4cd08bca954ad434bc636eda957ca8d5" title="Compute and return one output sample.">tick</a>();
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<a name="l00142"></a>00142 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
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<a name="l00143"></a>00143 *samples++ = lastFrame_[j];
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<a name="l00144"></a>00144 }
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<a name="l00145"></a>00145 }
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<a name="l00146"></a>00146
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<a name="l00147"></a>00147 <span class="keywordflow">return</span> frames;
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<a name="l00148"></a>00148 }
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<a name="l00149"></a>00149
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<a name="l00150"></a>00150 } <span class="comment">// stk namespace</span>
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<a name="l00151"></a>00151
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<a name="l00152"></a>00152 <span class="preprocessor">#endif</span>
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</pre></div></div>
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<HR>
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<table>
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<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
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<tr><td>©1995-2010 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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<tr><td>©1995-2011 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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</table>
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</BODY>
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