mirror of
https://github.com/thestk/stk
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125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
#ifndef STK_VOICFORM_H
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#define STK_VOICFORM_H
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#include "Instrmnt.h"
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#include "Envelope.h"
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#include "Noise.h"
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#include "SingWave.h"
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#include "FormSwep.h"
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#include "OnePole.h"
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#include "OneZero.h"
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namespace stk {
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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 - 2010.
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*/
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/***************************************************/
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class VoicForm : public Instrmnt
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{
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public:
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//! Class constructor.
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/*!
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An StkError will be thrown if the rawwave path is incorrectly set.
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*/
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VoicForm( void );
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//! Class destructor.
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~VoicForm( void );
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//! Reset and clear all internal state.
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void clear( void );
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//! Set instrument parameters for a particular frequency.
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void setFrequency( StkFloat frequency );
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//! Set instrument parameters for the given phoneme. Returns false if phoneme not found.
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bool setPhoneme( const char* phoneme );
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//! Set the voiced component gain.
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void setVoiced( StkFloat vGain ) { voiced_->setGainTarget(vGain); };
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//! Set the unvoiced component gain.
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void setUnVoiced( StkFloat nGain ) { noiseEnv_.setTarget(nGain); };
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//! Set the sweep rate for a particular formant filter (0-3).
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void setFilterSweepRate( unsigned int whichOne, StkFloat rate );
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//! Set voiced component pitch sweep rate.
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void setPitchSweepRate( StkFloat rate ) { voiced_->setSweepRate(rate); };
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//! Start the voice.
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void speak( void ) { voiced_->noteOn(); };
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//! Stop the voice.
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void quiet( void );
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//! Start a note with the given frequency and amplitude.
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void noteOn( StkFloat frequency, StkFloat amplitude );
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//! Stop a note with the given amplitude (speed of decay).
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void noteOff( StkFloat amplitude ) { this->quiet(); };
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//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
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void controlChange( int number, StkFloat value );
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//! Compute and return one output sample.
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StkFloat tick( unsigned int channel = 0 );
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protected:
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SingWave *voiced_;
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Noise noise_;
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Envelope noiseEnv_;
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FormSwep filters_[4];
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OnePole onepole_;
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OneZero onezero_;
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};
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inline StkFloat VoicForm :: tick( unsigned int )
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{
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StkFloat 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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lastFrame_[0] = filters_[0].tick(temp);
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lastFrame_[0] += filters_[1].tick(temp);
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lastFrame_[0] += filters_[2].tick(temp);
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lastFrame_[0] += filters_[3].tick(temp);
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/*
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temp += noiseEnv_.tick() * noise_.tick();
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lastFrame_[0] = filters_[0].tick(temp);
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lastFrame_[0] = filters_[1].tick(lastFrame_[0]);
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lastFrame_[0] = filters_[2].tick(lastFrame_[0]);
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lastFrame_[0] = filters_[3].tick(lastFrame_[0]);
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*/
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return lastFrame_[0];
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}
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} // stk namespace
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#endif
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