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#ifndef STK_RECORDER_H
#define STK_RECORDER_H
#include "Instrmnt.h"
#include "Iir.h"
#include "DelayL.h"
#include "Noise.h"
#include "SineWave.h"
#include "ADSR.h"
namespace stk {
/***************************************************/
/*! \class Recorder
\brief A recorder / flute physical model.
This class implements a physical model of a recorder /
flute instrument, based on the paper "Sound production
in recorderlike instruments. II. A simulation model."
by M.P. Verge, A. Hirschberg and R. Causse, Journal of
the Acoustical Society of America, 1997.
Control Change Numbers:
- Softness = 2
- Noise Gain = 4
- Noise Cutoff = 16
- Vibrato Frequency = 11
- Vibrato Gain = 1
- Breath Pressure = 128
by Mathias Bredholt, McGill University.
Formatted for STK by Gary Scavone, 2023.
*/
/***************************************************/
class Recorder : public Instrmnt
{
public:
//! Class constructor.
Recorder( void );
//! Class destructor.
~Recorder( void );
//! Reset and clear all internal state.
void clear( void );
//! Set instrument parameters for a particular frequency.
void setFrequency( StkFloat val );
//! Apply breath velocity to instrument with given amplitude and rate of increase.
void startBlowing( StkFloat amplitude, StkFloat rate );
//! Decrease breath velocity with given rate of decrease.
void stopBlowing( StkFloat rate );
//! Start a note with the given frequency and amplitude.
void noteOn( StkFloat frequency, StkFloat amplitude );
//! Stop a note with the given amplitude (speed of decay).
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 );
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c channel argument must be less than the number of
channels in the StkFrames argument (the first channel is specified
by 0). However, range checking is only performed if _STK_DEBUG_
is defined during compilation, in which case an out-of-range value
will trigger an StkError exception.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
void setBlowPressure( StkFloat val );
void setVibratoGain( StkFloat val );
void setVibratoFrequency( StkFloat val );
void setNoiseGain( StkFloat val );
void setBreathCutoff( StkFloat val );
void setSoftness( StkFloat val );
private:
DelayL pinDelay_;
DelayL poutDelay_;
DelayL jetDelay_;
Iir radiation_filter_;
Iir visco_in_filter_;
Iir visco_out_filter_;
Iir jetFilter_;
Noise turb_;
Iir turbFilter_;
SineWave vibrato_;
ADSR adsr_;
//StkFloat M{ 0 };
//StkFloat maxPressure_( 0 );
double maxPressure_;
//StkFloat blow{ 0 };
StkFloat vibratoGain_;
StkFloat noiseGain_;
StkFloat breathCutoff_;
StkFloat outputGain_;
StkFloat psi_;
StkFloat poutL_;
StkFloat pout_;
StkFloat poutm1_;
StkFloat poutm2_;
StkFloat pin_;
StkFloat pinm1_;
StkFloat pinm2_;
StkFloat b1;
StkFloat b3;
StkFloat b4;
StkFloat Uj_;
StkFloat Ujm1_;
StkFloat Qj_;
StkFloat Qjm1_;
StkFloat Qjm2_;
StkFloat Q1_;
StkFloat Q1m1_;
StkFloat Q1m2_;
StkFloat Qp_;
StkFloat Qpm1_;
StkFloat pm_;
};
inline StkFrames& Recorder :: tick( StkFrames& frames, unsigned int channel )
{
unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
if ( channel > frames.channels() - nChannels ) {
oStream_ << "Recorder::tick(): channel and StkFrames arguments are incompatible!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat *samples = &frames[channel];
unsigned int j, hop = frames.channels() - nChannels;
if ( nChannels == 1 ) {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
*samples++ = tick();
}
else {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
*samples++ = tick();
for ( j=1; j<nChannels; j++ )
*samples++ = lastFrame_[j];
}
}
return frames;
}
} // stk namespace
#endif
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