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BeeThree.h

00001 #ifndef STK_BEETHREE_H
00002 #define STK_BEETHREE_H
00003 
00004 #include "FM.h"
00005 
00006 namespace stk {
00007 
00008 /***************************************************/
00040 /***************************************************/
00041 
00042 class BeeThree : public FM
00043 {
00044  public:
00046 
00049   BeeThree( void );
00050 
00052   ~BeeThree( void );
00053 
00055   void noteOn( StkFloat frequency, StkFloat amplitude );
00056 
00058   StkFloat tick( unsigned int channel = 0 );
00059 
00061 
00068   StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
00069 
00070  protected:
00071 
00072 };
00073 
00074 inline StkFloat BeeThree :: tick( unsigned int )
00075 {
00076   register StkFloat temp;
00077 
00078   if ( modDepth_ > 0.0 )   {
00079     temp = 1.0 + ( modDepth_ * vibrato_.tick() * 0.1 );
00080     waves_[0]->setFrequency( baseFrequency_ * temp * ratios_[0] );
00081     waves_[1]->setFrequency( baseFrequency_ * temp * ratios_[1] );
00082     waves_[2]->setFrequency( baseFrequency_ * temp * ratios_[2] );
00083     waves_[3]->setFrequency( baseFrequency_ * temp * ratios_[3] );
00084   }
00085 
00086   waves_[3]->addPhaseOffset( twozero_.lastOut() );
00087   temp = control1_ * 2.0 * gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
00088   twozero_.tick( temp );
00089 
00090   temp += control2_ * 2.0 * gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
00091   temp += gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
00092   temp += gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
00093 
00094   lastFrame_[0] = temp * 0.125;
00095   return lastFrame_[0];
00096 }
00097 
00098 inline StkFrames& BeeThree :: tick( StkFrames& frames, unsigned int channel )
00099 {
00100   unsigned int nChannels = lastFrame_.channels();
00101 #if defined(_STK_DEBUG_)
00102   if ( channel > frames.channels() - nChannels ) {
00103     oStream_ << "BeeThree::tick(): channel and StkFrames arguments are incompatible!";
00104     handleError( StkError::FUNCTION_ARGUMENT );
00105   }
00106 #endif
00107 
00108   StkFloat *samples = &frames[channel];
00109   unsigned int j, hop = frames.channels() - nChannels;
00110   if ( nChannels == 1 ) {
00111     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
00112       *samples++ = tick();
00113   }
00114   else {
00115     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
00116       *samples++ = tick();
00117       for ( j=1; j<nChannels; j++ )
00118         *samples++ = lastFrame_[j];
00119     }
00120   }
00121 
00122   return frames;
00123 }
00124 
00125 } // stk namespace
00126 
00127 #endif

The Synthesis ToolKit in C++ (STK)
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.