mirror of
https://github.com/thestk/stk
synced 2026-01-11 20:11:52 +00:00
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/***************************************************/
|
|
/*! \class Plucked
|
|
\brief STK plucked string model class.
|
|
|
|
This class implements a simple plucked string
|
|
physical model based on the Karplus-Strong
|
|
algorithm.
|
|
|
|
This is a digital waveguide model, making its
|
|
use possibly subject to patents held by
|
|
Stanford University, Yamaha, and others.
|
|
There exist at least two patents, assigned to
|
|
Stanford, bearing the names of Karplus and/or
|
|
Strong.
|
|
|
|
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
|
|
*/
|
|
/***************************************************/
|
|
|
|
#ifndef STK_PLUCKED_H
|
|
#define STK_PLUCKED_H
|
|
|
|
#include "Instrmnt.h"
|
|
#include "DelayA.h"
|
|
#include "OneZero.h"
|
|
#include "OnePole.h"
|
|
#include "Noise.h"
|
|
|
|
class Plucked : public Instrmnt
|
|
{
|
|
public:
|
|
//! Class constructor, taking the lowest desired playing frequency.
|
|
Plucked(StkFloat lowestFrequency);
|
|
|
|
//! Class destructor.
|
|
~Plucked();
|
|
|
|
//! Reset and clear all internal state.
|
|
void clear();
|
|
|
|
//! Set instrument parameters for a particular frequency.
|
|
virtual void setFrequency(StkFloat frequency);
|
|
|
|
//! Pluck the string with the given amplitude using the current frequency.
|
|
void pluck(StkFloat amplitude);
|
|
|
|
//! Start a note with the given frequency and amplitude.
|
|
virtual void noteOn(StkFloat frequency, StkFloat amplitude);
|
|
|
|
//! Stop a note with the given amplitude (speed of decay).
|
|
virtual void noteOff(StkFloat amplitude);
|
|
|
|
protected:
|
|
|
|
StkFloat computeSample( void );
|
|
|
|
DelayA delayLine_;
|
|
OneZero loopFilter_;
|
|
OnePole pickFilter_;
|
|
Noise noise_;
|
|
StkFloat loopGain_;
|
|
unsigned long length_;
|
|
|
|
};
|
|
|
|
#endif
|
|
|