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Four formant synthesis instrument. More...
#include <VoicForm.h>
Public Member Functions | |
VoicForm (void) | |
Class constructor. | |
~VoicForm (void) | |
Class destructor. | |
void | clear (void) |
Reset and clear all internal state. | |
void | setFrequency (StkFloat frequency) |
Set instrument parameters for a particular frequency. | |
bool | setPhoneme (const char *phoneme) |
Set instrument parameters for the given phoneme. Returns false if phoneme not found. | |
void | setVoiced (StkFloat vGain) |
Set the voiced component gain. | |
void | setUnVoiced (StkFloat nGain) |
Set the unvoiced component gain. | |
void | setFilterSweepRate (unsigned int whichOne, StkFloat rate) |
Set the sweep rate for a particular formant filter (0-3). | |
void | setPitchSweepRate (StkFloat rate) |
Set voiced component pitch sweep rate. | |
void | speak (void) |
Start the voice. | |
void | quiet (void) |
Stop the voice. | |
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. |
Four formant synthesis instrument.
This instrument contains an excitation singing wavetable (looping wave with random and periodic vibrato, smoothing on frequency, etc.), excitation noise, and four sweepable complex resonances.
Measured formant data is included, and enough data is there to support either parallel or cascade synthesis. In the floating point case cascade synthesis is the most natural so that's what you'll find here.
Control Change Numbers:
by Perry R. Cook and Gary P. Scavone, 1995-2011.
stk::VoicForm::VoicForm | ( | 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.
00133 { 00134 unsigned int nChannels = lastFrame_.channels(); 00135 #if defined(_STK_DEBUG_) 00136 if ( channel > frames.channels() - nChannels ) { 00137 oStream_ << "VoicForm::tick(): channel and StkFrames arguments are incompatible!"; 00138 handleError( StkError::FUNCTION_ARGUMENT ); 00139 } 00140 #endif 00141 00142 StkFloat *samples = &frames[channel]; 00143 unsigned int j, hop = frames.channels() - nChannels; 00144 if ( nChannels == 1 ) { 00145 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00146 *samples++ = tick(); 00147 } 00148 else { 00149 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00150 *samples++ = tick(); 00151 for ( j=1; j<nChannels; j++ ) 00152 *samples++ = lastFrame_[j]; 00153 } 00154 } 00155 00156 return frames; 00157 }
The Synthesis ToolKit in C++ (STK) |
©1995-2011 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |