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https://github.com/thestk/stk
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Version 4.1
This commit is contained in:
Gary Scavone
committed by
Stephen Sinclair
Stephen Sinclair
parent
81475b04c5
commit
2f09fcd019
248
src/VoicForm.cpp
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248
src/VoicForm.cpp
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/***************************************************/
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/*! \class VoicForm
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\brief Four formant synthesis instrument.
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This instrument contains an excitation singing
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wavetable (looping wave with random and
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periodic vibrato, smoothing on frequency,
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etc.), excitation noise, and four sweepable
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complex resonances.
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Measured formant data is included, and enough
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data is there to support either parallel or
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cascade synthesis. In the floating point case
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cascade synthesis is the most natural so
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that's what you'll find here.
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Control Change Numbers:
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- Voiced/Unvoiced Mix = 2
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- Vowel/Phoneme Selection = 4
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- Vibrato Frequency = 11
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- Vibrato Gain = 1
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- Loudness (Spectral Tilt) = 128
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#include "VoicForm.h"
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#include "Phonemes.h"
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#include "SKINI.msg"
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#include <math.h>
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#include <string.h>
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VoicForm :: VoicForm() : Instrmnt()
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{
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// Concatenate the STK RAWWAVE_PATH to the rawwave file
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char file[128];
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strcpy(file, RAWWAVE_PATH);
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voiced = new SingWave( strcat(file,"impuls20.raw"), TRUE );
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voiced->setGainRate( 0.001 );
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voiced->setGainTarget( 0.0 );
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noise = new Noise;
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for ( int i=0; i<4; i++ ) {
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filters[i] = new FormSwep;
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filters[i]->setSweepRate( 0.001 );
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}
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onezero = new OneZero;
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onezero->setZero( -0.9 );
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onepole = new OnePole;
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onepole->setPole( 0.9 );
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noiseEnv = new Envelope;
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noiseEnv->setRate( 0.001 );
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noiseEnv->setTarget( 0.0 );
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this->setPhoneme( "eee" );
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this->clear();
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}
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VoicForm :: ~VoicForm()
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{
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delete voiced;
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delete noise;
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delete onezero;
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delete onepole;
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delete noiseEnv;
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for ( int i=0; i<4; i++ ) {
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delete filters[i];
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}
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}
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void VoicForm :: clear()
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{
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onezero->clear();
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onepole->clear();
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for ( int i=0; i<4; i++ ) {
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filters[i]->clear();
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}
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}
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void VoicForm :: setFrequency(MY_FLOAT frequency)
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{
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MY_FLOAT freakency = frequency;
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if ( frequency <= 0.0 ) {
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cerr << "VoicForm: setFrequency parameter is less than or equal to zero!" << endl;
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freakency = 220.0;
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}
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voiced->setFrequency( freakency );
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}
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bool VoicForm :: setPhoneme(const char *phoneme )
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{
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bool found = false;
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unsigned int i = 0;
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while( i < 32 && !found ) {
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if ( !strcmp( Phonemes::name(i), phoneme ) ) {
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found = true;
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filters[0]->setTargets( Phonemes::formantFrequency(i, 0), Phonemes::formantRadius(i, 0), pow(10.0, Phonemes::formantGain(i, 0 ) / 20.0) );
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filters[1]->setTargets( Phonemes::formantFrequency(i, 1), Phonemes::formantRadius(i, 1), pow(10.0, Phonemes::formantGain(i, 1 ) / 20.0) );
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filters[2]->setTargets( Phonemes::formantFrequency(i, 2), Phonemes::formantRadius(i, 2), pow(10.0, Phonemes::formantGain(i, 2 ) / 20.0) );
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filters[3]->setTargets( Phonemes::formantFrequency(i, 3), Phonemes::formantRadius(i, 3), pow(10.0, Phonemes::formantGain(i, 3 ) / 20.0) );
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setVoiced( Phonemes::voiceGain( i ) );
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setUnVoiced( Phonemes::noiseGain( i ) );
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#if defined(_STK_DEBUG_)
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cout << "VoicForm: found formant " << phoneme << " (number " << i << ")" << endl;
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#endif
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}
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i++;
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}
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if ( !found )
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cerr << "VoicForm: phoneme " << phoneme << " not found!" << endl;
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return found;
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}
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void VoicForm :: setVoiced(MY_FLOAT vGain)
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{
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voiced->setGainTarget(vGain);
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}
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void VoicForm :: setUnVoiced(MY_FLOAT nGain)
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{
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noiseEnv->setTarget(nGain);
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}
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void VoicForm :: setFilterSweepRate(int whichOne, MY_FLOAT rate)
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{
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if ( whichOne < 0 || whichOne > 3 ) {
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cerr << "VoicForm: setFilterSweepRate filter argument outside range 0-3!" << endl;
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return;
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}
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filters[whichOne]->setSweepRate(rate);
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}
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void VoicForm :: setPitchSweepRate(MY_FLOAT rate)
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{
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voiced->setSweepRate(rate);
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}
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void VoicForm :: speak()
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{
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voiced->noteOn();
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}
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void VoicForm :: quiet()
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{
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voiced->noteOff();
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noiseEnv->setTarget( 0.0 );
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}
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void VoicForm :: noteOn(MY_FLOAT frequency, MY_FLOAT amplitude)
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{
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setFrequency(frequency);
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voiced->setGainTarget(amplitude);
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onepole->setPole( 0.97 - (amplitude * 0.2) );
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}
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void VoicForm :: noteOff(MY_FLOAT amplitude)
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{
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this->quiet();
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}
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MY_FLOAT VoicForm :: tick()
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{
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MY_FLOAT temp;
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temp = onepole->tick( onezero->tick( voiced->tick() ) );
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temp += noiseEnv->tick() * noise->tick();
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lastOutput = filters[0]->tick(temp);
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lastOutput += filters[1]->tick(temp);
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lastOutput += filters[2]->tick(temp);
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lastOutput += filters[3]->tick(temp);
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/*
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temp += noiseEnv->tick() * noise->tick();
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lastOutput = filters[0]->tick(temp);
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lastOutput = filters[1]->tick(lastOutput);
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lastOutput = filters[2]->tick(lastOutput);
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lastOutput = filters[3]->tick(lastOutput);
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*/
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return lastOutput;
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}
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void VoicForm :: controlChange(int number, MY_FLOAT value)
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{
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MY_FLOAT norm = value * ONE_OVER_128;
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if ( norm < 0 ) {
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norm = 0.0;
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cerr << "VoicForm: Control value less than zero!" << endl;
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}
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else if ( norm > 1.0 ) {
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norm = 1.0;
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cerr << "VoicForm: Control value greater than 128.0!" << endl;
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}
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if (number == __SK_Breath_) { // 2
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this->setVoiced( 1.0 - norm );
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this->setUnVoiced( 0.01 * norm );
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}
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else if (number == __SK_FootControl_) { // 4
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MY_FLOAT temp = 0.0;
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unsigned int i = (int) value;
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if (i < 32) {
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temp = 0.9;
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}
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else if (i < 64) {
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i -= 32;
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temp = 1.0;
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}
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else if (i < 96) {
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i -= 64;
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temp = 1.1;
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}
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else if (i < 128) {
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i -= 96;
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temp = 1.2;
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}
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else if (i == 128) {
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i = 0;
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temp = 1.4;
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}
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filters[0]->setTargets( temp * Phonemes::formantFrequency(i, 0), Phonemes::formantRadius(i, 0), pow(10.0, Phonemes::formantGain(i, 0 ) / 20.0) );
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filters[1]->setTargets( temp * Phonemes::formantFrequency(i, 1), Phonemes::formantRadius(i, 1), pow(10.0, Phonemes::formantGain(i, 1 ) / 20.0) );
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filters[2]->setTargets( temp * Phonemes::formantFrequency(i, 2), Phonemes::formantRadius(i, 2), pow(10.0, Phonemes::formantGain(i, 2 ) / 20.0) );
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filters[3]->setTargets( temp * Phonemes::formantFrequency(i, 3), Phonemes::formantRadius(i, 3), pow(10.0, Phonemes::formantGain(i, 3 ) / 20.0) );
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setVoiced( Phonemes::voiceGain( i ) );
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setUnVoiced( Phonemes::noiseGain( i ) );
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}
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else if (number == __SK_ModFrequency_) // 11
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voiced->setVibratoRate( norm * 12.0); // 0 to 12 Hz
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else if (number == __SK_ModWheel_) // 1
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voiced->setVibratoGain( norm * 0.2);
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else if (number == __SK_AfterTouch_Cont_) { // 128
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setVoiced( norm );
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onepole->setPole( 0.97 - ( norm * 0.2) );
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}
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else
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cerr << "VoicForm: Undefined Control Number (" << number << ")!!" << endl;
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#if defined(_STK_DEBUG_)
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cerr << "VoicForm: controlChange number = " << number << ", value = " << value << endl;
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#endif
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}
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