mirror of
https://github.com/HifiExperiments/overte.git
synced 2025-06-18 11:40:33 +02:00
143 lines
4.1 KiB
C++
143 lines
4.1 KiB
C++
#ifndef STK_MANDOLIN_H
|
|
#define STK_MANDOLIN_H
|
|
|
|
#include "Instrmnt.h"
|
|
#include "Twang.h"
|
|
#include "FileWvIn.h"
|
|
|
|
namespace stk {
|
|
|
|
/***************************************************/
|
|
/*! \class Mandolin
|
|
\brief STK mandolin instrument model class.
|
|
|
|
This class uses two "twang" models and "commuted
|
|
synthesis" techniques to model a mandolin
|
|
instrument.
|
|
|
|
This is a digital waveguide model, making its
|
|
use possibly subject to patents held by Stanford
|
|
University, Yamaha, and others. Commuted
|
|
Synthesis, in particular, is covered by patents,
|
|
granted, pending, and/or applied-for. All are
|
|
assigned to the Board of Trustees, Stanford
|
|
University. For information, contact the Office
|
|
of Technology Licensing, Stanford University.
|
|
|
|
Control Change Numbers:
|
|
- Body Size = 2
|
|
- Pluck Position = 4
|
|
- String Sustain = 11
|
|
- String Detuning = 1
|
|
- Microphone Position = 128
|
|
|
|
by Perry R. Cook and Gary P. Scavone, 1995-2012.
|
|
*/
|
|
/***************************************************/
|
|
|
|
class Mandolin : public Instrmnt
|
|
{
|
|
public:
|
|
//! Class constructor, taking the lowest desired playing frequency.
|
|
Mandolin( StkFloat lowestFrequency );
|
|
|
|
//! Class destructor.
|
|
~Mandolin( void );
|
|
|
|
//! Reset and clear all internal state.
|
|
void clear( void );
|
|
|
|
//! Detune the two strings by the given factor. A value of 1.0 produces unison strings.
|
|
void setDetune( StkFloat detune );
|
|
|
|
//! Set the body size (a value of 1.0 produces the "default" size).
|
|
void setBodySize( StkFloat size );
|
|
|
|
//! Set the pluck or "excitation" position along the string (0.0 - 1.0).
|
|
void setPluckPosition( StkFloat position );
|
|
|
|
//! Set instrument parameters for a particular frequency.
|
|
void setFrequency( StkFloat frequency );
|
|
|
|
//! Pluck the strings with the given amplitude (0.0 - 1.0) using the current frequency.
|
|
void pluck( StkFloat amplitude );
|
|
|
|
//! Pluck the strings with the given amplitude (0.0 - 1.0) and position (0.0 - 1.0).
|
|
void pluck( StkFloat amplitude,StkFloat position );
|
|
|
|
//! Start a note with the given frequency and amplitude (0.0 - 1.0).
|
|
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 );
|
|
|
|
protected:
|
|
|
|
Twang strings_[2];
|
|
FileWvIn soundfile_[12];
|
|
|
|
int mic_;
|
|
StkFloat detuning_;
|
|
StkFloat frequency_;
|
|
StkFloat pluckAmplitude_;
|
|
};
|
|
|
|
inline StkFloat Mandolin :: tick( unsigned int )
|
|
{
|
|
StkFloat temp = 0.0;
|
|
if ( !soundfile_[mic_].isFinished() )
|
|
temp = soundfile_[mic_].tick() * pluckAmplitude_;
|
|
|
|
lastFrame_[0] = strings_[0].tick( temp );
|
|
lastFrame_[0] += strings_[1].tick( temp );
|
|
lastFrame_[0] *= 0.2;
|
|
|
|
return lastFrame_[0];
|
|
}
|
|
|
|
inline StkFrames& Mandolin :: tick( StkFrames& frames, unsigned int channel )
|
|
{
|
|
unsigned int nChannels = lastFrame_.channels();
|
|
#if defined(_STK_DEBUG_)
|
|
if ( channel > frames.channels() - nChannels ) {
|
|
oStream_ << "Mandolin::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
|