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# JCRev.h

    00001 #ifndef STK_JCREV_H
    00002 #define STK_JCREV_H
    00003
    00004 #include "Effect.h"
    00005 #include "Delay.h"
    00006 #include "OnePole.h"
    00007
    00008 namespace stk {
    00009
    00010 /***************************************************/
    00029 /***************************************************/
    00030
    00031 class JCRev : public Effect
    00032 {
    00033  public:
    00035   JCRev( StkFloat T60 = 1.0 );
    00036
    00038   void clear( void );
    00039
    00041   void setT60( StkFloat T60 );
    00042
    00044
    00052   StkFloat lastOut( unsigned int channel = 0 );
    00053
    00055
    00062   StkFloat tick( StkFloat input, unsigned int channel = 0 );
    00063
    00065
    00074   StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
    00075
    00077
    00086   StkFrames& tick( StkFrames& iFrames, StkFrames &oFrames, unsigned int iChannel = 0, unsigned int oChannel = 0 );
    00087
    00088  protected:
    00089
    00090   Delay allpassDelays_[3];
    00091   Delay combDelays_[4];
    00092   OnePole combFilters_[4];
    00093   Delay outLeftDelay_;
    00094   Delay outRightDelay_;
    00095   StkFloat allpassCoefficient_;
    00096   StkFloat combCoefficient_[4];
    00097
    00098 };
    00099
    00100 inline StkFloat JCRev :: lastOut( unsigned int channel )
    00101 {
    00102 #if defined(_STK_DEBUG_)
    00103   if ( channel > 1 ) {
    00104     oStream_ << "JCRev::lastOut(): channel argument must be less than 2!";
    00105     handleError( StkError::FUNCTION_ARGUMENT );
    00106   }
    00107 #endif
    00108
    00109   return lastFrame_[channel];
    00110 }
    00111
    00112 inline StkFloat JCRev :: tick( StkFloat input, unsigned int channel )
    00113 {
    00114 #if defined(_STK_DEBUG_)
    00115   if ( channel > 1 ) {
    00116     oStream_ << "JCRev::tick(): channel argument must be less than 2!";
    00117     handleError( StkError::FUNCTION_ARGUMENT );
    00118   }
    00119 #endif
    00120
    00121   StkFloat temp, temp0, temp1, temp2, temp3, temp4, temp5, temp6;
    00122   StkFloat filtout;
    00123
    00124   temp = allpassDelays_[0].lastOut();
    00125   temp0 = allpassCoefficient_ * temp;
    00126   temp0 += input;
    00127   allpassDelays_[0].tick(temp0);
    00128   temp0 = -(allpassCoefficient_ * temp0) + temp;
    00129
    00130   temp = allpassDelays_[1].lastOut();
    00131   temp1 = allpassCoefficient_ * temp;
    00132   temp1 += temp0;
    00133   allpassDelays_[1].tick(temp1);
    00134   temp1 = -(allpassCoefficient_ * temp1) + temp;
    00135
    00136   temp = allpassDelays_[2].lastOut();
    00137   temp2 = allpassCoefficient_ * temp;
    00138   temp2 += temp1;
    00139   allpassDelays_[2].tick(temp2);
    00140   temp2 = -(allpassCoefficient_ * temp2) + temp;
    00141
    00142   temp3 = temp2 + ( combFilters_[0].tick( combCoefficient_[0] * combDelays_[0].lastOut() ) );
    00143   temp4 = temp2 + ( combFilters_[1].tick( combCoefficient_[1] * combDelays_[1].lastOut() ) );
    00144   temp5 = temp2 + ( combFilters_[2].tick( combCoefficient_[2] * combDelays_[2].lastOut() ) );
    00145   temp6 = temp2 + ( combFilters_[3].tick( combCoefficient_[3] * combDelays_[3].lastOut() ) );
    00146
    00147   combDelays_[0].tick(temp3);
    00148   combDelays_[1].tick(temp4);
    00149   combDelays_[2].tick(temp5);
    00150   combDelays_[3].tick(temp6);
    00151
    00152   filtout = temp3 + temp4 + temp5 + temp6;
    00153
    00154   lastFrame_[0] = effectMix_ * (outLeftDelay_.tick(filtout));
    00155   lastFrame_[1] = effectMix_ * (outRightDelay_.tick(filtout));
    00156   temp = (1.0 - effectMix_) * input;
    00157   lastFrame_[0] += temp;
    00158   lastFrame_[1] += temp;
    00159
    00160   return 0.7 * lastFrame_[channel];
    00161 }
    00162
    00163 } // stk namespace
    00164
    00165 #endif
    00166

The Synthesis ToolKit in C++ (STK)
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