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# Sitar.h

    00001 #ifndef STK_SITAR_H
    00002 #define STK_SITAR_H
    00003
    00004 #include "Instrmnt.h"
    00005 #include "DelayA.h"
    00006 #include "OneZero.h"
    00007 #include "Noise.h"
    00008 #include "ADSR.h"
    00009 #include <cmath>
    00010
    00011 namespace stk {
    00012
    00013 /***************************************************/
    00030 /***************************************************/
    00031
    00032 class Sitar : public Instrmnt
    00033 {
    00034  public:
    00036   Sitar( StkFloat lowestFrequency = 20 );
    00037
    00039   ~Sitar( void );
    00040
    00042   void clear( void );
    00043
    00045   void setFrequency( StkFloat frequency );
    00046
    00048   void pluck( StkFloat amplitude );
    00049
    00051   void noteOn( StkFloat frequency, StkFloat amplitude );
    00052
    00054   void noteOff( StkFloat amplitude );
    00055
    00057   StkFloat tick( unsigned int channel = 0 );
    00058
    00059  protected:
    00060
    00061   DelayA  delayLine_;
    00062   OneZero loopFilter_;
    00063   Noise   noise_;
    00064   ADSR    envelope_;
    00065
    00066   StkFloat loopGain_;
    00067   StkFloat amGain_;
    00068   StkFloat delay_;
    00069   StkFloat targetDelay_;
    00070
    00071 };
    00072
    00073 inline StkFloat Sitar :: tick( unsigned int )
    00074 {
    00075   if ( fabs(targetDelay_ - delay_) > 0.001 ) {
    00076     if ( targetDelay_ < delay_ )
    00077       delay_ *= 0.99999;
    00078     else
    00079       delay_ *= 1.00001;
    00080     delayLine_.setDelay( delay_ );
    00081   }
    00082
    00083   lastFrame_[0] = delayLine_.tick( loopFilter_.tick( delayLine_.lastOut() * loopGain_ ) +
    00084                                 (amGain_ * envelope_.tick() * noise_.tick()));
    00085
    00086   return lastFrame_[0];
    00087 }
    00088
    00089 } // stk namespace
    00090
    00091 #endif
    00092

The Synthesis ToolKit in C++ (STK)
©1995-2010 Perry R. Cook and Gary P. Scavone. All Rights Reserved.