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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<div class="navpath"><a class="el" href="dir_221deb9bdff892d63ed1e409450a60d2.html">include</a>
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<h1>PercFlut.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_PERCFLUT_H</span>
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<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_PERCFLUT_H</span>
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<a name="l00003"></a>00003 <span class="preprocessor"></span>
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<a name="l00004"></a>00004 <span class="preprocessor">#include "FM.h"</span>
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<a name="l00005"></a>00005
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<a name="l00006"></a>00006 <span class="keyword">namespace </span>stk {
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<a name="l00007"></a>00007
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<a name="l00008"></a>00008 <span class="comment">/***************************************************/</span>
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<a name="l00034"></a>00034 <span class="comment">/***************************************************/</span>
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<a name="l00035"></a>00035
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<a name="l00036"></a><a class="code" href="classstk_1_1PercFlut.html">00036</a> <span class="keyword">class </span><a class="code" href="classstk_1_1PercFlut.html" title="STK percussive flute FM synthesis instrument.">PercFlut</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a>
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<a name="l00037"></a>00037 {
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<a name="l00038"></a>00038 <span class="keyword">public</span>:
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<a name="l00040"></a>00040
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<a name="l00043"></a>00043 <a class="code" href="classstk_1_1PercFlut.html#ab51f05b79d818ed8ba80fd827a4839c2" title="Class constructor.">PercFlut</a>( <span class="keywordtype">void</span> );
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<a name="l00044"></a>00044
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<a name="l00046"></a>00046 <a class="code" href="classstk_1_1PercFlut.html#add2a18e8835d665d505521e0298bd2f0" title="Class destructor.">~PercFlut</a>( <span class="keywordtype">void</span> );
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<a name="l00047"></a>00047
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<a name="l00049"></a>00049 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PercFlut.html#a24197fb4ae0bf806d8e3f6fe4eb5598c" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
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<a name="l00050"></a>00050
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<a name="l00052"></a>00052 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PercFlut.html#a7ebfc19d4c41482a699f43b2c06dc02d" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
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<a name="l00053"></a>00053
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<a name="l00055"></a>00055 StkFloat <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" 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="l00056"></a>00056
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<a name="l00058"></a>00058
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<a name="l00065"></a>00065 <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_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" 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="l00066"></a>00066
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<a name="l00067"></a>00067 <span class="keyword">protected</span>:
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 };
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<a name="l00070"></a>00070
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<a name="l00071"></a><a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054">00071</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">PercFlut :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00072"></a>00072 {
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<a name="l00073"></a>00073 <span class="keyword">register</span> StkFloat temp;
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<a name="l00074"></a>00074
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<a name="l00075"></a>00075 temp = vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>() * modDepth_ * 0.2;
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<a name="l00076"></a>00076 waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[0]);
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<a name="l00077"></a>00077 waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[1]);
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<a name="l00078"></a>00078 waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[2]);
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<a name="l00079"></a>00079 waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[3]);
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<a name="l00080"></a>00080
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<a name="l00081"></a>00081 waves_[3]->addPhaseOffset( twozero_.<a class="code" href="classstk_1_1TwoZero.html#ae9808b0152902d0067ea24ccfba0b4ba" title="Return the last computed output value.">lastOut</a>() );
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<a name="l00082"></a>00082 temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084 twozero_.<a class="code" href="classstk_1_1TwoZero.html#acf92a66aeb2024cfcdb9d71ecadf3d82" title="Input one sample to the filter and return one output.">tick</a>(temp);
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<a name="l00085"></a>00085 waves_[2]->addPhaseOffset( temp );
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<a name="l00086"></a>00086 temp = (1.0 - (control2_ * 0.5)) * gains_[2] * adsr_[2]-><a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>() * waves_[2]->tick();
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088 temp += control2_ * 0.5 * gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
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<a name="l00089"></a>00089 temp = temp * control1_;
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<a name="l00090"></a>00090
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<a name="l00091"></a>00091 waves_[0]->addPhaseOffset(temp);
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<a name="l00092"></a>00092 temp = gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
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<a name="l00093"></a>00093
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<a name="l00094"></a>00094 lastFrame_[0] = temp * 0.5;
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<a name="l00095"></a>00095 <span class="keywordflow">return</span> lastFrame_[0];
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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_1PercFlut.html#a4105b2b1dfe375bcf870fb4903509e4e">00098</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_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">PercFlut :: 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="l00099"></a>00099 {
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<a name="l00100"></a>00100 <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="l00101"></a>00101 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00102"></a>00102 <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="l00103"></a>00103 oStream_ << <span class="stringliteral">"PercFlut::tick(): channel and StkFrames arguments are incompatible!"</span>;
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<a name="l00104"></a>00104 <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="l00105"></a>00105 }
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<a name="l00106"></a>00106 <span class="preprocessor">#endif</span>
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<a name="l00107"></a>00107 <span class="preprocessor"></span>
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<a name="l00108"></a>00108 StkFloat *samples = &frames[channel];
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<a name="l00109"></a>00109 <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="l00110"></a>00110 <span class="keywordflow">if</span> ( nChannels == 1 ) {
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<a name="l00111"></a>00111 <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="l00112"></a>00112 *samples++ = <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>();
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<a name="l00113"></a>00113 }
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<a name="l00114"></a>00114 <span class="keywordflow">else</span> {
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<a name="l00115"></a>00115 <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="l00116"></a>00116 *samples++ = <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>();
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<a name="l00117"></a>00117 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
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<a name="l00118"></a>00118 *samples++ = lastFrame_[j];
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<a name="l00119"></a>00119 }
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<a name="l00120"></a>00120 }
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<a name="l00121"></a>00121
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<a name="l00122"></a>00122 <span class="keywordflow">return</span> frames;
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<a name="l00123"></a>00123 }
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<a name="l00124"></a>00124
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<a name="l00125"></a>00125 } <span class="comment">// stk namespace</span>
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<a name="l00126"></a>00126
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<a name="l00127"></a>00127 <span class="preprocessor">#endif</span>
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</pre></div></div>
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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>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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