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Version 4.4.0

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Gary Scavone
2013-09-29 23:11:39 +02:00
committed by Stephen Sinclair
parent d199342e86
commit eccd8c9981
287 changed files with 11712 additions and 7676 deletions
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74
include/Bowed.h
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@@ -1,3 +1,16 @@
#ifndef STK_BOWED_H
#define STK_BOWED_H
#include "Instrmnt.h"
#include "DelayL.h"
#include "BowTable.h"
#include "OnePole.h"
#include "BiQuad.h"
#include "SineWave.h"
#include "ADSR.h"
namespace stk {
/***************************************************/
/*! \class Bowed
\brief STK bowed string instrument class.
@@ -17,58 +30,48 @@
- Vibrato Gain = 1
- Volume = 128
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
*/
/***************************************************/
#ifndef STK_BOWED_H
#define STK_BOWED_H
#include "Instrmnt.h"
#include "DelayL.h"
#include "BowTable.h"
#include "OnePole.h"
#include "BiQuad.h"
#include "SineWave.h"
#include "ADSR.h"
class Bowed : public Instrmnt
{
public:
//! Class constructor, taking the lowest desired playing frequency.
Bowed(StkFloat lowestFrequency);
Bowed( StkFloat lowestFrequency );
//! Class destructor.
~Bowed();
~Bowed( void );
//! Reset and clear all internal state.
void clear();
void clear( void );
//! Set instrument parameters for a particular frequency.
void setFrequency(StkFloat frequency);
void setFrequency( StkFloat frequency );
//! Set vibrato gain.
void setVibrato(StkFloat gain);
void setVibrato( StkFloat gain );
//! Apply breath pressure to instrument with given amplitude and rate of increase.
void startBowing(StkFloat amplitude, StkFloat rate);
void startBowing( StkFloat amplitude, StkFloat rate );
//! Decrease breath pressure with given rate of decrease.
void stopBowing(StkFloat rate);
void stopBowing( StkFloat rate );
//! Start a note with the given frequency and amplitude.
void noteOn(StkFloat frequency, StkFloat amplitude);
void noteOn( StkFloat frequency, StkFloat amplitude );
//! Stop a note with the given amplitude (speed of decay).
void noteOff(StkFloat amplitude);
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);
void controlChange( int number, StkFloat value );
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
protected:
StkFloat computeSample( void );
DelayL neckDelay_;
DelayL bridgeDelay_;
BowTable bowTable_;
@@ -83,4 +86,27 @@ class Bowed : public Instrmnt
};
inline StkFloat Bowed :: tick( unsigned int )
{
StkFloat bowVelocity = maxVelocity_ * adsr_.tick();
StkFloat bridgeRefl = -stringFilter_.tick( bridgeDelay_.lastOut() );
StkFloat nutRefl = -neckDelay_.lastOut();
StkFloat stringVel = bridgeRefl + nutRefl; // Sum is string velocity
StkFloat velDiff = bowVelocity - stringVel; // Differential velocity
StkFloat newVel = velDiff * bowTable_.tick( velDiff ); // Non-Linear bow function
neckDelay_.tick(bridgeRefl + newVel); // Do string propagations
bridgeDelay_.tick(nutRefl + newVel);
if ( vibratoGain_ > 0.0 ) {
neckDelay_.setDelay( (baseDelay_ * (1.0 - betaRatio_) ) +
(baseDelay_ * vibratoGain_ * vibrato_.tick()) );
}
lastFrame_[0] = bodyFilter_.tick( bridgeDelay_.lastOut() );
return lastFrame_[0];
}
} // stk namespace
#endif