mirror of
https://github.com/thestk/stk
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Version 0.99
This commit is contained in:
Gary Scavone
Stephen Sinclair
228
VoicForm.cpp
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228
VoicForm.cpp
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/*******************************************/
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/* 4 Formant Synthesis Instrument */
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/* by Perry R. Cook, 1995-96 */
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/* This instrument contains an excitation */
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/* singing wavetable (looping wave with */
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/* random and periodic vibrato, smoothing */
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/* on frequency, etc.), excitation noise, */
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/* and four sweepable complex resonances. */
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/* */
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/* Measured Formant data (from me) is */
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/* included, and enough data is there to */
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/* support either parallel or cascade */
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/* synthesis. In the floating point case */
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/* cascade synthesis is the most natural */
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/* so that's what you'll find here. */
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/* */
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/* For right now, there's a simple command*/
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/* line score interface consisting of 3 */
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/* letter symbols for the phonemes, =xx */
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/* sets the pitch to x, + and - add and */
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/* subtract a half step, and ... makes it */
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/* keep doing what it's doing for longer. */
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/*******************************************/
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#include "VoicForm.h"
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VoicForm :: VoicForm() : Instrmnt()
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{
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voiced = new SingWave("rawwaves/impuls40.raw");
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voiced->normalize();
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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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filters[0] = new FormSwep;
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filters[1] = new FormSwep;
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filters[2] = new FormSwep;
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filters[3] = new FormSwep;
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filters[0]->setSweepRate(0.001);
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filters[1]->setSweepRate(0.001);
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filters[2]->setSweepRate(0.001);
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filters[3]->setSweepRate(0.001);
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onezero = new OneZero;
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onezero->setCoeff(-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 filters[0];
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delete filters[1];
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delete filters[2];
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delete filters[3];
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delete onezero;
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delete onepole;
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delete noiseEnv;
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}
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void VoicForm :: clear()
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{
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onepole->clear();
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filters[0]->clear();
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filters[1]->clear();
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filters[2]->clear();
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filters[3]->clear();
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}
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void VoicForm :: setFreq(double frequency)
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{
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voiced->setFreq(frequency);
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}
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void VoicForm :: setFormantAll(int whichOne, double freq,double reson,double gain)
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{
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filters[whichOne]->setTargets(freq,reson,gain);
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}
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extern double phonGains[32][2];
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extern double phonParams[32][4][3];
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extern char phonemes[32][4];
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int VoicForm :: setPhoneme(char *phoneme)
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{
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int i=0,found=0;
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while(i<32 && !found) {
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if (!strcmp(phonemes[i],phoneme)) {
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found = 1;
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this->setFormantAll(0,phonParams[i][0][0],phonParams[i][0][1],pow(10.0,phonParams[i][0][2] / 20.0));
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this->setFormantAll(1,phonParams[i][1][0],phonParams[i][1][1],1.0);
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this->setFormantAll(2,phonParams[i][2][0],phonParams[i][2][1],1.0);
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this->setFormantAll(3,phonParams[i][3][0],phonParams[i][3][1],1.0);
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this->setVoicedUnVoiced(phonGains[i][0],phonGains[i][1]);
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printf("Found Formant: %s (number %i)\n",phoneme,i);
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}
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i++;
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}
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if (!found) printf("Phoneme %s not found\n",phoneme);
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return found;
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}
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void VoicForm :: setVoiced(double vGain)
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{
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voiced->setGainTarget(vGain);
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}
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void VoicForm :: setUnVoiced(double nGain)
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{
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noiseEnv->setTarget(nGain);
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}
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void VoicForm :: setVoicedUnVoiced(double vGain, double nGain)
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{
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this->setVoiced(vGain);
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this->setUnVoiced(nGain);
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}
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void VoicForm :: setFiltSweepRate(int whichOne,double rate)
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{
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filters[whichOne]->setSweepRate(rate);
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}
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void VoicForm :: setPitchSweepRate(double 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 freq, MY_FLOAT amp)
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{
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voiced->setGainTarget(amp);
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onepole->setPole(0.95 - (amp * NORM_7 * 0.2));
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voiced->setFreq(freq);
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}
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void VoicForm :: noteOff(MY_FLOAT amp)
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{
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voiced->noteOff();
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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(lastOutput);
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lastOutput = filters[2]->tick(lastOutput);
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lastOutput = filters[3]->tick(lastOutput);
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lastOutput *= 0.02;
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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 temp;
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int tempi;
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#if defined(_debug_)
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printf("VoicForm : ControlChange: Number=%i Value=%f\n",number,value);
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#endif
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if (number == MIDI_control1) {
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this->setVoiced(1.0 - (value*NORM_7));
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this->setUnVoiced(0.01 * value * NORM_7);
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}
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else if (number == MIDI_control2) {
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tempi = (int) (value / 2);
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if (tempi < 16) {
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tempi = tempi;
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temp = 0.9;
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}
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else if (tempi < 32) {
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tempi = tempi - 16;
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temp = 1.0;
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}
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else if (tempi < 48) {
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tempi = tempi - 32;
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temp = 1.1;
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}
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else if (tempi < 64) {
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tempi = tempi - 48;
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temp = 1.2;
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}
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this->setFormantAll(0,temp*phonParams[tempi][0][0],
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phonParams[tempi][0][1],
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pow(10.0,phonParams[tempi][0][2] / 20.0));
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this->setFormantAll(1,temp*phonParams[tempi][1][0],
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phonParams[tempi][1][1],1.0);
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this->setFormantAll(2,temp*phonParams[tempi][2][0],
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phonParams[tempi][2][1],1.0);
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this->setFormantAll(3,temp*phonParams[tempi][3][0],
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phonParams[tempi][3][1],1.0);
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}
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else if (number == MIDI_control3)
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voiced->setVibFreq(value * NORM_7 * 12.0); /* 0 to 12 Hz */
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else if (number == MIDI_mod_wheel)
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voiced->setVibAmt(value * NORM_7 * 0.2);
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else if (number == MIDI_after_touch) {
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this->setVoiced(value*NORM_7);
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onepole->setPole(0.99 - (value*NORM_7 * 0.2));
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}
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else {
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printf("VoicForm : Undefined Control Number!!\n");
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}
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}
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