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<h1>PRCRev.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_PRCREV_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_PRCREV_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "Effect.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "Delay.h"</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="keyword">namespace </span>stk {
<a name="l00008"></a>00008
<a name="l00009"></a>00009 <span class="comment">/***************************************************/</span>
<a name="l00022"></a>00022 <span class="comment">/***************************************************/</span>
<a name="l00023"></a>00023
<a name="l00024"></a><a class="code" href="classstk_1_1PRCRev.html">00024</a> <span class="keyword">class </span><a class="code" href="classstk_1_1PRCRev.html" title="Perry&#39;s simple reverberator class.">PRCRev</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Effect.html" title="STK abstract effects parent class.">Effect</a>
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026 <span class="keyword">public</span>:
<a name="l00028"></a>00028 <a class="code" href="classstk_1_1PRCRev.html#afb6440fb909a3091f21f31f3565014de" title="Class constructor taking a T60 decay time argument (one second default value).">PRCRev</a>( StkFloat T60 = 1.0 );
<a name="l00029"></a>00029
<a name="l00031"></a>00031 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PRCRev.html#a3e2fa911784a02a6d7211cbe2348ffe1" title="Reset and clear all internal state.">clear</a>( <span class="keywordtype">void</span> );
<a name="l00032"></a>00032
<a name="l00034"></a>00034 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PRCRev.html#a9478ed84e76d12cc66d11716ebfa8b3b" title="Set the reverberation T60 decay time.">setT60</a>( StkFloat T60 );
<a name="l00035"></a>00035
<a name="l00037"></a>00037
<a name="l00045"></a>00045 StkFloat <a class="code" href="classstk_1_1PRCRev.html#a47ed5fee4401f0050d6a47d1154e81c6" title="Return the specified channel value of the last computed stereo frame.">lastOut</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00046"></a>00046
<a name="l00048"></a>00048
<a name="l00055"></a>00055 StkFloat <a class="code" href="classstk_1_1PRCRev.html#ada84d5241777575b660db100a85b35a6" title="Input one sample to the effect and return the specified channel value of the computed...">tick</a>( StkFloat input, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00056"></a>00056
<a name="l00058"></a>00058
<a name="l00067"></a>00067 <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_1PRCRev.html#ada84d5241777575b660db100a85b35a6" title="Input one sample to the effect and return the specified channel value of the computed...">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="l00068"></a>00068
<a name="l00070"></a>00070
<a name="l00079"></a>00079 <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_1PRCRev.html#ada84d5241777575b660db100a85b35a6" title="Input one sample to the effect and return the specified channel value of the computed...">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="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keyword">protected</span>:
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> allpassDelays_[2];
<a name="l00084"></a>00084 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> combDelays_[2];
<a name="l00085"></a>00085 StkFloat allpassCoefficient_;
<a name="l00086"></a>00086 StkFloat combCoefficient_[2];
<a name="l00087"></a>00087
<a name="l00088"></a>00088 };
<a name="l00089"></a>00089
<a name="l00090"></a><a class="code" href="classstk_1_1PRCRev.html#a47ed5fee4401f0050d6a47d1154e81c6">00090</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1PRCRev.html#a47ed5fee4401f0050d6a47d1154e81c6" title="Return the specified channel value of the last computed stereo frame.">PRCRev :: lastOut</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00093"></a>00093 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > 1 ) {
<a name="l00094"></a>00094 oStream_ << <span class="stringliteral">"PRCRev::lastOut(): channel argument must be less than 2!"</span>;
<a name="l00095"></a>00095 <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="l00096"></a>00096 }
<a name="l00097"></a>00097 <span class="preprocessor">#endif</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span>
<a name="l00099"></a>00099 <span class="keywordflow">return</span> lastFrame_[channel];
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101
<a name="l00102"></a><a class="code" href="classstk_1_1PRCRev.html#ada84d5241777575b660db100a85b35a6">00102</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1PRCRev.html#ada84d5241777575b660db100a85b35a6" title="Input one sample to the effect and return the specified channel value of the computed...">PRCRev :: tick</a>( StkFloat input, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00105"></a>00105 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > 1 ) {
<a name="l00106"></a>00106 oStream_ << <span class="stringliteral">"PRCRev::tick(): channel argument must be less than 2!"</span>;
<a name="l00107"></a>00107 <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="l00108"></a>00108 }
<a name="l00109"></a>00109 <span class="preprocessor">#endif</span>
<a name="l00110"></a>00110 <span class="preprocessor"></span>
<a name="l00111"></a>00111 StkFloat temp, temp0, temp1, temp2, temp3;
<a name="l00112"></a>00112
<a name="l00113"></a>00113 temp = allpassDelays_[0].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>();
<a name="l00114"></a>00114 temp0 = allpassCoefficient_ * temp;
<a name="l00115"></a>00115 temp0 += input;
<a name="l00116"></a>00116 allpassDelays_[0].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp0);
<a name="l00117"></a>00117 temp0 = -(allpassCoefficient_ * temp0) + temp;
<a name="l00118"></a>00118
<a name="l00119"></a>00119 temp = allpassDelays_[1].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>();
<a name="l00120"></a>00120 temp1 = allpassCoefficient_ * temp;
<a name="l00121"></a>00121 temp1 += temp0;
<a name="l00122"></a>00122 allpassDelays_[1].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp1);
<a name="l00123"></a>00123 temp1 = -(allpassCoefficient_ * temp1) + temp;
<a name="l00124"></a>00124
<a name="l00125"></a>00125 temp2 = temp1 + ( combCoefficient_[0] * combDelays_[0].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>() );
<a name="l00126"></a>00126 temp3 = temp1 + ( combCoefficient_[1] * combDelays_[1].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>() );
<a name="l00127"></a>00127
<a name="l00128"></a>00128 lastFrame_[0] = effectMix_ * (combDelays_[0].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp2));
<a name="l00129"></a>00129 lastFrame_[1] = effectMix_ * (combDelays_[1].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp3));
<a name="l00130"></a>00130 temp = (1.0 - effectMix_) * input;
<a name="l00131"></a>00131 lastFrame_[0] += temp;
<a name="l00132"></a>00132 lastFrame_[1] += temp;
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="keywordflow">return</span> lastFrame_[channel];
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 } <span class="comment">// stk namespace</span>
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="preprocessor">#endif</span>
<a name="l00140"></a>00140 <span class="preprocessor"></span>
</pre></div></div>
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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>
<tr><td>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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