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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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69
include/StifKarp.h
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@@ -1,3 +1,15 @@
#ifndef STK_STIFKARP_H
#define STK_STIFKARP_H
#include "Instrmnt.h"
#include "DelayL.h"
#include "DelayA.h"
#include "OneZero.h"
#include "Noise.h"
#include "BiQuad.h"
namespace stk {
/***************************************************/
/*! \class StifKarp
\brief STK plucked stiff string instrument.
@@ -17,40 +29,30 @@
- String Sustain = 11
- String Stretch = 1
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
*/
/***************************************************/
#ifndef STK_STIFKARP_H
#define STK_STIFKARP_H
#include "Instrmnt.h"
#include "DelayL.h"
#include "DelayA.h"
#include "OneZero.h"
#include "Noise.h"
#include "BiQuad.h"
class StifKarp : public Instrmnt
{
public:
//! Class constructor, taking the lowest desired playing frequency.
StifKarp(StkFloat lowestFrequency);
StifKarp( StkFloat lowestFrequency );
//! Class destructor.
~StifKarp();
~StifKarp( 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 the stretch "factor" of the string (0.0 - 1.0).
void setStretch(StkFloat stretch);
void setStretch( StkFloat stretch );
//! Set the pluck or "excitation" position along the string (0.0 - 1.0).
void setPickupPosition(StkFloat position);
void setPickupPosition( StkFloat position );
//! Set the base loop gain.
/*!
@@ -58,24 +60,25 @@ class StifKarp : public Instrmnt
Because of high-frequency loop filter roll-off, higher
frequency settings have greater loop gains.
*/
void setBaseLoopGain(StkFloat aGain);
void setBaseLoopGain( StkFloat aGain );
//! Pluck the string with the given amplitude using the current frequency.
void pluck(StkFloat amplitude);
void pluck( StkFloat amplitude );
//! 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_;
DelayL combDelay_;
OneZero filter_;
@@ -93,4 +96,22 @@ class StifKarp : public Instrmnt
};
inline StkFloat StifKarp :: tick( unsigned int )
{
StkFloat temp = delayLine_.lastOut() * loopGain_;
// Calculate allpass stretching.
for (int i=0; i<4; i++)
temp = biquad_[i].tick(temp);
// Moving average filter.
temp = filter_.tick(temp);
lastFrame_[0] = delayLine_.tick(temp);
lastFrame_[0] = lastFrame_[0] - combDelay_.tick( lastFrame_[0] );
return lastFrame_[0];
}
} // stk namespace
#endif