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Whistle.h

/***************************************************/
/*! \class Whistle
    \brief STK police/referee whistle instrument class.

    This class implements a hybrid physical/spectral
    model of a police whistle (a la Cook).

    Control Change Numbers: 
       - Noise Gain = 4
       - Fipple Modulation Frequency = 11
       - Fipple Modulation Gain = 1
       - Blowing Frequency Modulation = 2
       - Volume = 128

    by Perry R. Cook  1996 - 2004.
*/
/***************************************************/

#ifndef STK_WHISTLE_H
#define STK_WHISTLE_H

#include "Instrmnt.h"
#include "Sphere.h"
#include "Vector3D.h"
#include "Noise.h"
#include "SineWave.h"
#include "OnePole.h"
#include "Envelope.h"

00030 class Whistle : public Instrmnt
{
public:
  //! Class constructor.
  /*!
    An StkError will be thrown if the rawwave path is incorrectly set.
  */
  Whistle();

  //! Class destructor.
  ~Whistle();

  //! Reset and clear all internal state.
  void clear();

  //! Set instrument parameters for a particular frequency.
  void setFrequency(StkFloat frequency);

  //! Apply breath velocity to instrument with given amplitude and rate of increase.
  void startBlowing(StkFloat amplitude, StkFloat rate);

  //! Decrease breath velocity with given rate of decrease.
  void stopBlowing(StkFloat rate);

  //! Start a note with the given frequency and amplitude.
  void noteOn(StkFloat frequency, StkFloat amplitude);

  //! Stop a note with the given amplitude (speed of decay).
  void noteOff(StkFloat amplitude);

  //! Perform the control change specified by \e number and \e value (0.0 - 128.0).
  void controlChange(int number, StkFloat value);

protected:

  StkFloat computeSample( void );

  Vector3D *tempVectorP_;
  Vector3D tempVector_;
  OnePole onepole_;
  Noise noise_;
  Envelope envelope_;
  Sphere can_;           // Declare a Spherical "can".
  Sphere pea_, bumper_;  // One spherical "pea", and a spherical "bumper".

  SineWave sine_;

  StkFloat baseFrequency_;
  StkFloat noiseGain_;
  StkFloat fippleFreqMod_;
  StkFloat fippleGainMod_;
  StkFloat blowFreqMod_;
  StkFloat tickSize_;
  StkFloat canLoss_;
  int subSample_, subSampCount_;
};

#endif

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