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Moog.h

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 
00059  protected:
00060 
00061   FormSwep filters_[2];
00062   StkFloat modDepth_;
00063   StkFloat filterQ_;
00064   StkFloat filterRate_;
00065 
00066 };
00067 
00068 inline StkFloat Moog :: tick( unsigned int )
00069 {
00070   StkFloat temp;
00071 
00072   if ( modDepth_ != 0.0 ) {
00073     temp = loops_[1]->tick() * modDepth_;    
00074     loops_[0]->setFrequency( baseFrequency_ * (1.0 + temp) );
00075   }
00076 
00077   temp = attackGain_ * attacks_[0]->tick();
00078   temp += loopGain_ * loops_[0]->tick();
00079   temp = filter_.tick( temp );
00080   temp *= adsr_.tick();
00081   temp = filters_[0].tick( temp );
00082   lastFrame_[0] = filters_[1].tick( temp );
00083   return lastFrame_[0] * 6.0;
00084 }
00085 
00086 } // stk namespace
00087 
00088 #endif

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