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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
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