Home Information Classes Download Usage Mail List Requirements Links FAQ Tutorial
00001 #ifndef STK_MOOG_H 00002 #define STK_MOOG_H 00003 00004 #include "Sampler.h" 00005 #include "FormSwep.h" 00006 00007 namespace stk { 00008 00009 /***************************************************/ 00027 /***************************************************/ 00028 00029 class Moog : public Sampler 00030 { 00031 public: 00033 00036 Moog( void ); 00037 00039 ~Moog( void ); 00040 00042 void setFrequency( StkFloat frequency ); 00043 00045 void noteOn( StkFloat frequency, StkFloat amplitude ); 00046 00048 void setModulationSpeed( StkFloat mSpeed ) { loops_[1]->setFrequency( mSpeed ); }; 00049 00051 void setModulationDepth( StkFloat mDepth ) { modDepth_ = mDepth * 0.5; }; 00052 00054 void controlChange( int number, StkFloat value ); 00055 00057 StkFloat tick( unsigned int channel = 0 ); 00058 00060 00067 StkFrames& tick( StkFrames& frames, unsigned int channel = 0 ); 00068 00069 protected: 00070 00071 FormSwep filters_[2]; 00072 StkFloat modDepth_; 00073 StkFloat filterQ_; 00074 StkFloat filterRate_; 00075 00076 }; 00077 00078 inline StkFloat Moog :: tick( unsigned int ) 00079 { 00080 StkFloat temp; 00081 00082 if ( modDepth_ != 0.0 ) { 00083 temp = loops_[1]->tick() * modDepth_; 00084 loops_[0]->setFrequency( baseFrequency_ * (1.0 + temp) ); 00085 } 00086 00087 temp = attackGain_ * attacks_[0]->tick(); 00088 temp += loopGain_ * loops_[0]->tick(); 00089 temp = filter_.tick( temp ); 00090 temp *= adsr_.tick(); 00091 temp = filters_[0].tick( temp ); 00092 lastFrame_[0] = filters_[1].tick( temp ); 00093 return lastFrame_[0] * 6.0; 00094 } 00095 00096 inline StkFrames& Moog :: tick( StkFrames& frames, unsigned int channel ) 00097 { 00098 unsigned int nChannels = lastFrame_.channels(); 00099 #if defined(_STK_DEBUG_) 00100 if ( channel > frames.channels() - nChannels ) { 00101 oStream_ << "Moog::tick(): channel and StkFrames arguments are incompatible!"; 00102 handleError( StkError::FUNCTION_ARGUMENT ); 00103 } 00104 #endif 00105 00106 StkFloat *samples = &frames[channel]; 00107 unsigned int j, hop = frames.channels() - nChannels; 00108 if ( nChannels == 1 ) { 00109 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00110 *samples++ = tick(); 00111 } 00112 else { 00113 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00114 *samples++ = tick(); 00115 for ( j=1; j<nChannels; j++ ) 00116 *samples++ = lastFrame_[j]; 00117 } 00118 } 00119 00120 return frames; 00121 } 00122 00123 } // stk namespace 00124 00125 #endif
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |