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FMVoices.h

00001 #ifndef STK_FMVOICES_H
00002 #define STK_FMVOICES_H
00003 
00004 #include "FM.h"
00005 
00006 namespace stk {
00007 
00008 /***************************************************/
00038 /***************************************************/
00039 
00040 class FMVoices : public FM
00041 {
00042  public:
00044 
00047   FMVoices( void );
00048 
00050   ~FMVoices( void );
00051 
00053   void setFrequency( StkFloat frequency );
00054 
00056   void noteOn( StkFloat frequency, StkFloat amplitude );
00057 
00059   void controlChange( int number, StkFloat value );
00060 
00062   StkFloat tick( unsigned int channel = 0 );
00063 
00064  protected:
00065 
00066   int currentVowel_;
00067   StkFloat tilt_[3];
00068   StkFloat mods_[3];
00069 };
00070 
00071 inline StkFloat FMVoices :: tick( unsigned int )
00072 {
00073   register StkFloat temp, temp2;
00074 
00075   temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
00076   temp2 = vibrato_.tick() * modDepth_ * 0.1;
00077 
00078   waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp2) * ratios_[0]);
00079   waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp2) * ratios_[1]);
00080   waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp2) * ratios_[2]);
00081   waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp2) * ratios_[3]);
00082 
00083   waves_[0]->addPhaseOffset(temp * mods_[0]);
00084   waves_[1]->addPhaseOffset(temp * mods_[1]);
00085   waves_[2]->addPhaseOffset(temp * mods_[2]);
00086   waves_[3]->addPhaseOffset( twozero_.lastOut() );
00087   twozero_.tick( temp );
00088   temp =  gains_[0] * tilt_[0] * adsr_[0]->tick() * waves_[0]->tick();
00089   temp += gains_[1] * tilt_[1] * adsr_[1]->tick() * waves_[1]->tick();
00090   temp += gains_[2] * tilt_[2] * adsr_[2]->tick() * waves_[2]->tick();
00091 
00092   lastFrame_[0] = temp * 0.33;
00093   return lastFrame_[0];
00094 }
00095 
00096 } // stk namespace
00097 
00098 #endif

The Synthesis ToolKit in C++ (STK)
©1995-2010 Perry R. Cook and Gary P. Scavone. All Rights Reserved.