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<h1>JCRev.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_JCREV_H</span>
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<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_JCREV_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 "Effect.h"</span>
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<a name="l00005"></a>00005 <span class="preprocessor">#include "Delay.h"</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include "OnePole.h"</span>
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<a name="l00007"></a>00007
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<a name="l00008"></a>00008 <span class="keyword">namespace </span>stk {
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<a name="l00009"></a>00009
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<a name="l00010"></a>00010 <span class="comment">/***************************************************/</span>
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<a name="l00029"></a>00029 <span class="comment">/***************************************************/</span>
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<a name="l00030"></a>00030
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<a name="l00031"></a><a class="code" href="classstk_1_1JCRev.html">00031</a> <span class="keyword">class </span><a class="code" href="classstk_1_1JCRev.html" title="John Chowning&#39;s reverberator class.">JCRev</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Effect.html" title="STK abstract effects parent class.">Effect</a>
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<a name="l00032"></a>00032 {
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<a name="l00033"></a>00033 <span class="keyword">public</span>:
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<a name="l00035"></a>00035 <a class="code" href="classstk_1_1JCRev.html#a5b9f0e2b7acc1fcb94a663353f1253dd" title="Class constructor taking a T60 decay time argument (one second default value).">JCRev</a>( StkFloat T60 = 1.0 );
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<a name="l00036"></a>00036
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<a name="l00038"></a>00038 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1JCRev.html#abf92e9783e4a738b6d3a3350bfae986e" title="Reset and clear all internal state.">clear</a>( <span class="keywordtype">void</span> );
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<a name="l00039"></a>00039
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<a name="l00041"></a>00041 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1JCRev.html#a8f4caa6de1e662c76b853ebab814a2eb" title="Set the reverberation T60 decay time.">setT60</a>( StkFloat T60 );
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<a name="l00042"></a>00042
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<a name="l00044"></a>00044
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<a name="l00052"></a>00052 StkFloat <a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" 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 );
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<a name="l00053"></a>00053
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<a name="l00055"></a>00055
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<a name="l00062"></a>00062 StkFloat <a class="code" href="classstk_1_1JCRev.html#ad667b48a6dbd663f2d7c49e201325f00" 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 );
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<a name="l00063"></a>00063
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<a name="l00065"></a>00065
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<a name="l00074"></a>00074 <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_1JCRev.html#ad667b48a6dbd663f2d7c49e201325f00" 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 );
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<a name="l00075"></a>00075
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<a name="l00077"></a>00077
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<a name="l00086"></a>00086 <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_1JCRev.html#ad667b48a6dbd663f2d7c49e201325f00" 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 );
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088 <span class="keyword">protected</span>:
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> allpassDelays_[3];
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<a name="l00091"></a>00091 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> combDelays_[4];
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<a name="l00092"></a>00092 <a class="code" href="classstk_1_1OnePole.html" title="STK one-pole filter class.">OnePole</a> combFilters_[4];
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<a name="l00093"></a>00093 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> outLeftDelay_;
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<a name="l00094"></a>00094 <a class="code" href="classstk_1_1Delay.html" title="STK non-interpolating delay line class.">Delay</a> outRightDelay_;
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<a name="l00095"></a>00095 StkFloat allpassCoefficient_;
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<a name="l00096"></a>00096 StkFloat combCoefficient_[4];
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<a name="l00097"></a>00097
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<a name="l00098"></a>00098 };
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<a name="l00099"></a>00099
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<a name="l00100"></a><a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b">00100</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" title="Return the specified channel value of the last computed stereo frame.">JCRev :: lastOut</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
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<a name="l00101"></a>00101 {
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<a name="l00102"></a>00102 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00103"></a>00103 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > 1 ) {
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<a name="l00104"></a>00104 oStream_ << <span class="stringliteral">"JCRev::lastOut(): channel argument must be less than 2!"</span>;
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<a name="l00105"></a>00105 <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="l00106"></a>00106 }
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<a name="l00107"></a>00107 <span class="preprocessor">#endif</span>
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<a name="l00108"></a>00108 <span class="preprocessor"></span>
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<a name="l00109"></a>00109 <span class="keywordflow">return</span> lastFrame_[channel];
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<a name="l00110"></a>00110 }
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<a name="l00111"></a>00111
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<a name="l00112"></a><a class="code" href="classstk_1_1JCRev.html#ad667b48a6dbd663f2d7c49e201325f00">00112</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1JCRev.html#ad667b48a6dbd663f2d7c49e201325f00" title="Input one sample to the effect and return the specified channel value of the computed...">JCRev :: tick</a>( StkFloat input, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
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<a name="l00113"></a>00113 {
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<a name="l00114"></a>00114 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00115"></a>00115 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > 1 ) {
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<a name="l00116"></a>00116 oStream_ << <span class="stringliteral">"JCRev::tick(): channel argument must be less than 2!"</span>;
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<a name="l00117"></a>00117 <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="l00118"></a>00118 }
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<a name="l00119"></a>00119 <span class="preprocessor">#endif</span>
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<a name="l00120"></a>00120 <span class="preprocessor"></span>
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<a name="l00121"></a>00121 StkFloat temp, temp0, temp1, temp2, temp3, temp4, temp5, temp6;
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<a name="l00122"></a>00122 StkFloat filtout;
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124 temp = allpassDelays_[0].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>();
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<a name="l00125"></a>00125 temp0 = allpassCoefficient_ * temp;
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<a name="l00126"></a>00126 temp0 += input;
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<a name="l00127"></a>00127 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);
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<a name="l00128"></a>00128 temp0 = -(allpassCoefficient_ * temp0) + temp;
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<a name="l00129"></a>00129
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<a name="l00130"></a>00130 temp = allpassDelays_[1].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>();
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<a name="l00131"></a>00131 temp1 = allpassCoefficient_ * temp;
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<a name="l00132"></a>00132 temp1 += temp0;
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<a name="l00133"></a>00133 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);
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<a name="l00134"></a>00134 temp1 = -(allpassCoefficient_ * temp1) + temp;
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<a name="l00135"></a>00135
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<a name="l00136"></a>00136 temp = allpassDelays_[2].<a class="code" href="classstk_1_1Delay.html#a7b563a37eec1773e8e82f9e328aed9b2" title="Return the last computed output value.">lastOut</a>();
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<a name="l00137"></a>00137 temp2 = allpassCoefficient_ * temp;
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<a name="l00138"></a>00138 temp2 += temp1;
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<a name="l00139"></a>00139 allpassDelays_[2].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp2);
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<a name="l00140"></a>00140 temp2 = -(allpassCoefficient_ * temp2) + temp;
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<a name="l00141"></a>00141
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<a name="l00142"></a>00142 temp3 = temp2 + ( combFilters_[0].<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( combCoefficient_[0] * combDelays_[0].<a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" title="Return the specified channel value of the last computed stereo frame.">lastOut</a>() ) );
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<a name="l00143"></a>00143 temp4 = temp2 + ( combFilters_[1].<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( combCoefficient_[1] * combDelays_[1].<a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" title="Return the specified channel value of the last computed stereo frame.">lastOut</a>() ) );
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<a name="l00144"></a>00144 temp5 = temp2 + ( combFilters_[2].<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( combCoefficient_[2] * combDelays_[2].<a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" title="Return the specified channel value of the last computed stereo frame.">lastOut</a>() ) );
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<a name="l00145"></a>00145 temp6 = temp2 + ( combFilters_[3].<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( combCoefficient_[3] * combDelays_[3].<a class="code" href="classstk_1_1JCRev.html#a599e46bcfbc2b4b9a30a30d67580412b" title="Return the specified channel value of the last computed stereo frame.">lastOut</a>() ) );
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<a name="l00146"></a>00146
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<a name="l00147"></a>00147 combDelays_[0].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp3);
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<a name="l00148"></a>00148 combDelays_[1].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp4);
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<a name="l00149"></a>00149 combDelays_[2].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp5);
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<a name="l00150"></a>00150 combDelays_[3].<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(temp6);
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<a name="l00151"></a>00151
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<a name="l00152"></a>00152 filtout = temp3 + temp4 + temp5 + temp6;
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<a name="l00153"></a>00153
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<a name="l00154"></a>00154 lastFrame_[0] = effectMix_ * (outLeftDelay_.<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(filtout));
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<a name="l00155"></a>00155 lastFrame_[1] = effectMix_ * (outRightDelay_.<a class="code" href="classstk_1_1Delay.html#aa1a929e0e324417b8a55cbf8770532e9" title="Input one sample to the filter and return one output.">tick</a>(filtout));
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<a name="l00156"></a>00156 temp = (1.0 - effectMix_) * input;
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<a name="l00157"></a>00157 lastFrame_[0] += temp;
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<a name="l00158"></a>00158 lastFrame_[1] += temp;
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<a name="l00159"></a>00159
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<a name="l00160"></a>00160 <span class="keywordflow">return</span> 0.7 * lastFrame_[channel];
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<a name="l00161"></a>00161 }
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<a name="l00162"></a>00162
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<a name="l00163"></a>00163 } <span class="comment">// stk namespace</span>
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<a name="l00164"></a>00164
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<a name="l00165"></a>00165 <span class="preprocessor">#endif</span>
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<a name="l00166"></a>00166 <span class="preprocessor"></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>©1995-2011 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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