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STK noise driven formant filter. More...
#include <Resonate.h>
Public Member Functions | |
Resonate (void) | |
Class constructor. | |
~Resonate (void) | |
Class destructor. | |
void | clear (void) |
Reset and clear all internal state. | |
void | setResonance (StkFloat frequency, StkFloat radius) |
Set the filter for a resonance at the given frequency (Hz) and radius. | |
void | setNotch (StkFloat frequency, StkFloat radius) |
Set the filter for a notch at the given frequency (Hz) and radius. | |
void | setEqualGainZeroes (void) |
Set the filter zero coefficients for contant resonance gain. | |
void | keyOn (void) |
Initiate the envelope with a key-on event. | |
void | keyOff (void) |
Signal a key-off event to the envelope. | |
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 noise driven formant filter.
This instrument contains a noise source, which excites a biquad resonance filter, with volume controlled by an ADSR.
Control Change Numbers:
by Perry R. Cook and Gary P. Scavone, 1995-2012.
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.
00099 { 00100 unsigned int nChannels = lastFrame_.channels(); 00101 #if defined(_STK_DEBUG_) 00102 if ( channel > frames.channels() - nChannels ) { 00103 oStream_ << "Resonate::tick(): channel and StkFrames arguments are incompatible!"; 00104 handleError( StkError::FUNCTION_ARGUMENT ); 00105 } 00106 #endif 00107 00108 StkFloat *samples = &frames[channel]; 00109 unsigned int j, hop = frames.channels() - nChannels; 00110 if ( nChannels == 1 ) { 00111 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00112 *samples++ = tick(); 00113 } 00114 else { 00115 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00116 *samples++ = tick(); 00117 for ( j=1; j<nChannels; j++ ) 00118 *samples++ = lastFrame_[j]; 00119 } 00120 } 00121 00122 return frames; 00123 }
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |