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00001 #ifndef STK_WURLEY_H 00002 #define STK_WURLEY_H 00003 00004 #include "FM.h" 00005 00006 namespace stk { 00007 00008 /***************************************************/ 00038 /***************************************************/ 00039 00040 class Wurley : public FM 00041 { 00042 public: 00044 00047 Wurley( void ); 00048 00050 ~Wurley( void ); 00051 00053 void setFrequency( StkFloat frequency ); 00054 00056 void noteOn( StkFloat frequency, StkFloat amplitude ); 00057 00059 StkFloat tick( unsigned int channel = 0 ); 00060 00061 protected: 00062 00063 }; 00064 00065 inline StkFloat Wurley :: tick( unsigned int ) 00066 { 00067 StkFloat temp, temp2; 00068 00069 temp = gains_[1] * adsr_[1]->tick() * waves_[1]->tick(); 00070 temp = temp * control1_; 00071 00072 waves_[0]->addPhaseOffset( temp ); 00073 waves_[3]->addPhaseOffset( twozero_.lastOut() ); 00074 temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick(); 00075 twozero_.tick(temp); 00076 00077 waves_[2]->addPhaseOffset( temp ); 00078 temp = ( 1.0 - (control2_ * 0.5)) * gains_[0] * adsr_[0]->tick() * waves_[0]->tick(); 00079 temp += control2_ * 0.5 * gains_[2] * adsr_[2]->tick() * waves_[2]->tick(); 00080 00081 // Calculate amplitude modulation and apply it to output. 00082 temp2 = vibrato_.tick() * modDepth_; 00083 temp = temp * (1.0 + temp2); 00084 00085 lastFrame_[0] = temp * 0.5; 00086 return lastFrame_[0]; 00087 } 00088 00089 } // stk namespace 00090 00091 #endif
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