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# HevyMetl.h

    00001 #ifndef STK_HEVYMETL_H
    00002 #define STK_HEVYMETL_H
    00003
    00004 #include "FM.h"
    00005
    00006 namespace stk {
    00007
    00008 /***************************************************/
    00036 /***************************************************/
    00037
    00038 class HevyMetl : public FM
    00039 {
    00040  public:
    00042
    00045   HevyMetl( void );
    00046
    00048   ~HevyMetl( void );
    00049
    00051   void noteOn( StkFloat frequency, StkFloat amplitude );
    00052
    00054   StkFloat tick( unsigned int channel = 0 );
    00055
    00057
    00064   StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
    00065
    00066  protected:
    00067
    00068 };
    00069
    00070 inline StkFloat HevyMetl :: tick( unsigned int )
    00071 {
    00072   register StkFloat temp;
    00073
    00074   temp = vibrato_.tick() * modDepth_ * 0.2;
    00075   waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[0]);
    00076   waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[1]);
    00077   waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[2]);
    00078   waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[3]);
    00079
    00080   temp = gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
    00081   waves_[1]->addPhaseOffset( temp );
    00082
    00083   waves_[3]->addPhaseOffset( twozero_.lastOut() );
    00084   temp = (1.0 - (control2_ * 0.5)) * gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
    00085   twozero_.tick(temp);
    00086
    00087   temp += control2_ * 0.5 * gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
    00088   temp = temp * control1_;
    00089
    00090   waves_[0]->addPhaseOffset( temp );
    00091   temp = gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
    00092
    00093   lastFrame_[0] = temp * 0.5;
    00094   return lastFrame_[0];
    00095 }
    00096
    00097 inline StkFrames& HevyMetl :: tick( StkFrames& frames, unsigned int channel )
    00098 {
    00099   unsigned int nChannels = lastFrame_.channels();
    00100 #if defined(_STK_DEBUG_)
    00101   if ( channel > frames.channels() - nChannels ) {
    00102     oStream_ << "HevyMetl::tick(): channel and StkFrames arguments are incompatible!";
    00103     handleError( StkError::FUNCTION_ARGUMENT );
    00104   }
    00105 #endif
    00106
    00107   StkFloat *samples = &frames[channel];
    00108   unsigned int j, hop = frames.channels() - nChannels;
    00109   if ( nChannels == 1 ) {
    00110     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
    00111       *samples++ = tick();
    00112   }
    00113   else {
    00114     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
    00115       *samples++ = tick();
    00116       for ( j=1; j<nChannels; j++ )
    00117         *samples++ = lastFrame_[j];
    00118     }
    00119   }
    00120
    00121   return frames;
    00122 }
    00123
    00124 } // stk namespace
    00125
    00126 #endif

The Synthesis ToolKit in C++ (STK)
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