mirror of
https://github.com/thestk/stk
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109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
/***************************************************/
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/*! \class BlowHole
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\brief STK clarinet physical model with one
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register hole and one tonehole.
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This class is based on the clarinet model,
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with the addition of a two-port register hole
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and a three-port dynamic tonehole
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implementation, as discussed by Scavone and
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Cook (1998).
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In this implementation, the distances between
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the reed/register hole and tonehole/bell are
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fixed. As a result, both the tonehole and
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register hole will have variable influence on
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the playing frequency, which is dependent on
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the length of the air column. In addition,
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the highest playing freqeuency is limited by
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these fixed lengths.
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This is a digital waveguide model, making its
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use possibly subject to patents held by Stanford
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University, Yamaha, and others.
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Control Change Numbers:
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- Reed Stiffness = 2
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- Noise Gain = 4
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- Tonehole State = 11
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- Register State = 1
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- Breath Pressure = 128
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#if !defined(__BLOWHOLE_H)
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#define __BLOWHOLE_H
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#include "Instrmnt.h"
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#include "DelayL.h"
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#include "ReedTabl.h"
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#include "OneZero.h"
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#include "PoleZero.h"
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#include "Envelope.h"
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#include "Noise.h"
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#include "WaveLoop.h"
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class BlowHole : public Instrmnt
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{
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public:
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//! Class constructor.
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BlowHole(MY_FLOAT lowestFrequency);
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//! Class destructor.
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~BlowHole();
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//! Reset and clear all internal state.
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void clear();
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//! Set instrument parameters for a particular frequency.
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void setFrequency(MY_FLOAT frequency);
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//! Set the tonehole state (0.0 = closed, 1.0 = fully open).
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void setTonehole(MY_FLOAT newValue);
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//! Set the register hole state (0.0 = closed, 1.0 = fully open).
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void setVent(MY_FLOAT newValue);
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//! Apply breath pressure to instrument with given amplitude and rate of increase.
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void startBlowing(MY_FLOAT amplitude, MY_FLOAT rate);
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//! Decrease breath pressure with given rate of decrease.
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void stopBlowing(MY_FLOAT rate);
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//! Start a note with the given frequency and amplitude.
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void noteOn(MY_FLOAT frequency, MY_FLOAT amplitude);
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//! Stop a note with the given amplitude (speed of decay).
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void noteOff(MY_FLOAT amplitude);
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//! Compute one output sample.
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MY_FLOAT tick();
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//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
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void controlChange(int number, MY_FLOAT value);
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protected:
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DelayL *delays[3];
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ReedTabl *reedTable;
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OneZero *filter;
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PoleZero *tonehole;
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PoleZero *vent;
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Envelope *envelope;
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Noise *noise;
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WaveLoop *vibrato;
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long length;
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MY_FLOAT scatter;
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MY_FLOAT th_coeff;
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MY_FLOAT r_th;
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MY_FLOAT rh_coeff;
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MY_FLOAT rh_gain;
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MY_FLOAT outputGain;
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MY_FLOAT noiseGain;
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MY_FLOAT vibratoGain;
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};
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#endif
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