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Version 4.4.0

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This commit is contained in:
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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70
include/Brass.h
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@@ -1,3 +1,15 @@
#ifndef STK_BRASS_H
#define STK_BRASS_H
#include "Instrmnt.h"
#include "DelayA.h"
#include "BiQuad.h"
#include "PoleZero.h"
#include "ADSR.h"
#include "SineWave.h"
namespace stk {
/***************************************************/
/*! \class Brass
\brief STK simple brass instrument class.
@@ -16,20 +28,10 @@
- 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_BRASS_H
#define STK_BRASS_H
#include "Instrmnt.h"
#include "DelayA.h"
#include "BiQuad.h"
#include "PoleZero.h"
#include "ADSR.h"
#include "SineWave.h"
class Brass: public Instrmnt
{
public:
@@ -37,39 +39,40 @@ class Brass: public Instrmnt
/*!
An StkError will be thrown if the rawwave path is incorrectly set.
*/
Brass(StkFloat lowestFrequency);
Brass( StkFloat lowestFrequency );
//! Class destructor.
~Brass();
~Brass( );
//! Reset and clear all internal state.
void clear();
void clear( );
//! Set instrument parameters for a particular frequency.
void setFrequency(StkFloat frequency);
void setFrequency( StkFloat frequency );
//! Set the lips frequency.
void setLip(StkFloat frequency);
void setLip( StkFloat frequency );
//! Apply breath pressure to instrument with given amplitude and rate of increase.
void startBlowing(StkFloat amplitude, StkFloat rate);
void startBlowing( StkFloat amplitude, StkFloat rate );
//! Decrease breath pressure with given rate of decrease.
void stopBlowing(StkFloat rate);
void stopBlowing( 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 );
DelayA delayLine_;
BiQuad lipFilter_;
PoleZero dcBlock_;
@@ -83,4 +86,25 @@ class Brass: public Instrmnt
};
inline StkFloat Brass :: tick( unsigned int )
{
StkFloat breathPressure = maxPressure_ * adsr_.tick();
breathPressure += vibratoGain_ * vibrato_.tick();
StkFloat mouthPressure = 0.3 * breathPressure;
StkFloat borePressure = 0.85 * delayLine_.lastOut();
StkFloat deltaPressure = mouthPressure - borePressure; // Differential pressure.
deltaPressure = lipFilter_.tick( deltaPressure ); // Force - > position.
deltaPressure *= deltaPressure; // Basic position to area mapping.
if ( deltaPressure > 1.0 ) deltaPressure = 1.0; // Non-linear saturation.
// The following input scattering assumes the mouthPressure = area.
lastFrame_[0] = deltaPressure * mouthPressure + ( 1.0 - deltaPressure) * borePressure;
lastFrame_[0] = delayLine_.tick( dcBlock_.tick( lastFrame_[0] ) );
return lastFrame_[0];
}
} // stk namespace
#endif