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Banded waveguide modeling class. More...
#include <BandedWG.h>
Public Member Functions | |
BandedWG (void) | |
Class constructor. | |
~BandedWG (void) | |
Class destructor. | |
void | clear (void) |
Reset and clear all internal state. | |
void | setStrikePosition (StkFloat position) |
Set strike position (0.0 - 1.0). | |
void | setPreset (int preset) |
Select a preset. | |
void | setFrequency (StkFloat frequency) |
Set instrument parameters for a particular frequency. | |
void | startBowing (StkFloat amplitude, StkFloat rate) |
Apply bow velocity/pressure to instrument with given amplitude and rate of increase. | |
void | stopBowing (StkFloat rate) |
Decrease bow velocity/breath pressure with given rate of decrease. | |
void | pluck (StkFloat amp) |
Pluck the instrument with given amplitude. | |
void | noteOn (StkFloat frequency, StkFloat amplitude) |
Start a note with the given frequency and amplitude. | |
void | noteOff (StkFloat amplitude) |
Stop a note with the given amplitude (speed of decay). | |
void | controlChange (int number, StkFloat value) |
Perform the control change specified by number and value (0.0 - 128.0). | |
StkFloat | tick (unsigned int channel=0) |
Compute and return one output sample. | |
StkFrames & | tick (StkFrames &frames, unsigned int channel=0) |
Fill a channel of the StkFrames object with computed outputs. |
Banded waveguide modeling class.
This class uses banded waveguide techniques to model a variety of sounds, including bowed bars, glasses, and bowls. For more information, see Essl, G. and Cook, P. "Banded Waveguides: Towards Physical Modelling of Bar Percussion Instruments", Proceedings of the 1999 International Computer Music Conference.
Control Change Numbers:
by Georg Essl, 1999 - 2004. Modified for STK 4.0 by Gary Scavone.
Fill a channel of the StkFrames object with computed outputs.
The 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.
Implements stk::Instrmnt.
00125 { 00126 unsigned int nChannels = lastFrame_.channels(); 00127 #if defined(_STK_DEBUG_) 00128 if ( channel > frames.channels() - nChannels ) { 00129 oStream_ << "BandedWG::tick(): channel and StkFrames arguments are incompatible!"; 00130 handleError( StkError::FUNCTION_ARGUMENT ); 00131 } 00132 #endif 00133 00134 StkFloat *samples = &frames[channel]; 00135 unsigned int j, hop = frames.channels() - nChannels; 00136 if ( nChannels == 1 ) { 00137 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00138 *samples++ = tick(); 00139 } 00140 else { 00141 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00142 *samples++ = tick(); 00143 for ( j=1; j<nChannels; j++ ) 00144 *samples++ = lastFrame_[j]; 00145 } 00146 } 00147 00148 return frames; 00149 }
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