/usr/include/stk/VoicForm.h is in libstk0-dev 4.4.4-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | #ifndef STK_VOICFORM_H
#define STK_VOICFORM_H
#include "Instrmnt.h"
#include "Envelope.h"
#include "Noise.h"
#include "SingWave.h"
#include "FormSwep.h"
#include "OnePole.h"
#include "OneZero.h"
namespace stk {
/***************************************************/
/*! \class VoicForm
\brief 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:
- Voiced/Unvoiced Mix = 2
- Vowel/Phoneme Selection = 4
- Vibrato Frequency = 11
- Vibrato Gain = 1
- Loudness (Spectral Tilt) = 128
by Perry R. Cook and Gary P. Scavone, 1995-2012.
*/
/***************************************************/
class VoicForm : public Instrmnt
{
public:
//! Class constructor.
/*!
An StkError will be thrown if the rawwave path is incorrectly set.
*/
VoicForm( void );
//! Class destructor.
~VoicForm( void );
//! Reset and clear all internal state.
void clear( void );
//! Set instrument parameters for a particular frequency.
void setFrequency( StkFloat frequency );
//! Set instrument parameters for the given phoneme. Returns false if phoneme not found.
bool setPhoneme( const char* phoneme );
//! Set the voiced component gain.
void setVoiced( StkFloat vGain ) { voiced_->setGainTarget(vGain); };
//! Set the unvoiced component gain.
void setUnVoiced( StkFloat nGain ) { noiseEnv_.setTarget(nGain); };
//! Set the sweep rate for a particular formant filter (0-3).
void setFilterSweepRate( unsigned int whichOne, StkFloat rate );
//! Set voiced component pitch sweep rate.
void setPitchSweepRate( StkFloat rate ) { voiced_->setSweepRate(rate); };
//! Start the voice.
void speak( void ) { voiced_->noteOn(); };
//! Stop the voice.
void quiet( void );
//! Start a note with the given frequency and amplitude.
void noteOn( StkFloat frequency, StkFloat amplitude );
//! Stop a note with the given amplitude (speed of decay).
void noteOff( StkFloat amplitude ) { this->quiet(); };
//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
void controlChange( int number, StkFloat value );
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c 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.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
protected:
SingWave *voiced_;
Noise noise_;
Envelope noiseEnv_;
FormSwep filters_[4];
OnePole onepole_;
OneZero onezero_;
};
inline StkFloat VoicForm :: tick( unsigned int )
{
StkFloat temp;
temp = onepole_.tick( onezero_.tick( voiced_->tick() ) );
temp += noiseEnv_.tick() * noise_.tick();
lastFrame_[0] = filters_[0].tick(temp);
lastFrame_[0] += filters_[1].tick(temp);
lastFrame_[0] += filters_[2].tick(temp);
lastFrame_[0] += filters_[3].tick(temp);
/*
temp += noiseEnv_.tick() * noise_.tick();
lastFrame_[0] = filters_[0].tick(temp);
lastFrame_[0] = filters_[1].tick(lastFrame_[0]);
lastFrame_[0] = filters_[2].tick(lastFrame_[0]);
lastFrame_[0] = filters_[3].tick(lastFrame_[0]);
*/
return lastFrame_[0];
}
inline StkFrames& VoicForm :: tick( StkFrames& frames, unsigned int channel )
{
unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
if ( channel > frames.channels() - nChannels ) {
oStream_ << "VoicForm::tick(): channel and StkFrames arguments are incompatible!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat *samples = &frames[channel];
unsigned int j, hop = frames.channels() - nChannels;
if ( nChannels == 1 ) {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
*samples++ = tick();
}
else {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
*samples++ = tick();
for ( j=1; j<nChannels; j++ )
*samples++ = lastFrame_[j];
}
}
return frames;
}
} // stk namespace
#endif
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