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https://github.com/thestk/stk
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99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/***************************************************/
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/*! \class Bowed
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\brief STK bowed string instrument class.
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This class implements a bowed string model, a
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la Smith (1986), after McIntyre, Schumacher,
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Woodhouse (1983).
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This is a digital waveguide model, making its
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use possibly subject to patents held by
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Stanford University, Yamaha, and others.
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Control Change Numbers:
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- Bow Pressure = 2
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- Bow Position = 4
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- Vibrato Frequency = 11
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- Vibrato Gain = 1
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- Volume = 128
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by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
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*/
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/***************************************************/
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#ifndef STK_BOWED_H
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#define STK_BOWED_H
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#include "Instrmnt.h"
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#include "DelayL.h"
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#include "BowTable.h"
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#include "OnePole.h"
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#include "BiQuad.h"
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#include "WaveLoop.h"
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#include "ADSR.h"
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class Bowed : public Instrmnt
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{
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public:
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//! Class constructor, taking the lowest desired playing frequency.
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Bowed(StkFloat lowestFrequency);
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//! Class destructor.
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~Bowed();
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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(StkFloat frequency);
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//! Set vibrato gain.
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void setVibrato(StkFloat gain);
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//! Apply breath pressure to instrument with given amplitude and rate of increase.
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void startBowing(StkFloat amplitude, StkFloat rate);
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//! Decrease breath pressure with given rate of decrease.
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void stopBowing(StkFloat rate);
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//! Start a note with the given frequency and amplitude.
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void noteOn(StkFloat frequency, StkFloat amplitude);
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//! Stop a note with the given amplitude (speed of decay).
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void noteOff(StkFloat amplitude);
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//! Compute one output sample.
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StkFloat tick();
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//! Computer \e vectorSize outputs and return them in \e vector.
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StkFloat *tick(StkFloat *vector, unsigned int vectorSize);
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//! Fill a channel of the StkFrames object with computed outputs.
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/*!
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The \c channel argument should be one or greater (the first
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channel is specified by 1). An StkError will be thrown if the \c
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channel argument is zero or it is greater than the number of
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channels in the StkFrames object.
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*/
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StkFrames& tick( StkFrames& frames, unsigned int channel = 1 );
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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, StkFloat value);
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protected:
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DelayL neckDelay_;
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DelayL bridgeDelay_;
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BowTable bowTable_;
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OnePole stringFilter_;
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BiQuad bodyFilter_;
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WaveLoop *vibrato_;
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ADSR adsr_;
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StkFloat maxVelocity_;
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StkFloat baseDelay_;
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StkFloat vibratoGain_;
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StkFloat betaRatio_;
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};
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#endif
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