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STK police/referee whistle instrument class. More...
#include <Whistle.h>
Public Member Functions | |
Whistle (void) | |
Class constructor. | |
~Whistle (void) | |
Class destructor. | |
void | clear (void) |
Reset and clear all internal state. | |
void | setFrequency (StkFloat frequency) |
Set instrument parameters for a particular frequency. | |
void | startBlowing (StkFloat amplitude, StkFloat rate) |
Apply breath velocity to instrument with given amplitude and rate of increase. | |
void | stopBlowing (StkFloat rate) |
Decrease breath velocity with given rate of decrease. | |
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. |
STK police/referee whistle instrument class.
This class implements a hybrid physical/spectral model of a police whistle (a la Cook).
Control Change Numbers:
by Perry R. Cook 1995-2012.
stk::Whistle::Whistle | ( | void | ) |
Class constructor.
An StkError will be thrown if the rawwave path is incorrectly set.
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.
00101 { 00102 unsigned int nChannels = lastFrame_.channels(); 00103 #if defined(_STK_DEBUG_) 00104 if ( channel > frames.channels() - nChannels ) { 00105 oStream_ << "Whistle::tick(): channel and StkFrames arguments are incompatible!"; 00106 handleError( StkError::FUNCTION_ARGUMENT ); 00107 } 00108 #endif 00109 00110 StkFloat *samples = &frames[channel]; 00111 unsigned int j, hop = frames.channels() - nChannels; 00112 if ( nChannels == 1 ) { 00113 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00114 *samples++ = tick(); 00115 } 00116 else { 00117 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00118 *samples++ = tick(); 00119 for ( j=1; j<nChannels; j++ ) 00120 *samples++ = lastFrame_[j]; 00121 } 00122 } 00123 00124 return frames; 00125 }
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |