44 Bowed( StkFloat lowestFrequency = 8.0 );
56 void setVibrato( StkFloat gain ) { vibratoGain_ = gain; };
65 void noteOn( StkFloat frequency, StkFloat amplitude );
74 StkFloat
tick(
unsigned int channel = 0 );
97 StkFloat maxVelocity_;
99 StkFloat vibratoGain_;
104inline StkFloat Bowed :: tick(
unsigned int )
106 StkFloat bowVelocity = maxVelocity_ * adsr_.
tick();
107 StkFloat bridgeReflection = -stringFilter_.tick( bridgeDelay_.lastOut() );
108 StkFloat nutReflection = -neckDelay_.lastOut();
109 StkFloat stringVelocity = bridgeReflection + nutReflection;
110 StkFloat deltaV = bowVelocity - stringVelocity;
112 StkFloat newVelocity = 0.0;
114 newVelocity = deltaV * bowTable_.tick( deltaV );
115 neckDelay_.tick( bridgeReflection + newVelocity);
116 bridgeDelay_.tick(nutReflection + newVelocity);
118 if ( vibratoGain_ > 0.0 ) {
119 neckDelay_.setDelay( (baseDelay_ * (1.0 - betaRatio_) ) +
120 (baseDelay_ * vibratoGain_ * vibrato_.tick()) );
123 lastFrame_[0] = 0.1248 * bodyFilters_[5].tick( bodyFilters_[4].tick( bodyFilters_[3].tick( bodyFilters_[2].tick( bodyFilters_[1].tick( bodyFilters_[0].tick( bridgeDelay_.lastOut() ) ) ) ) ) );
125 return lastFrame_[0];
130 unsigned int nChannels = lastFrame_.
channels();
131#if defined(_STK_DEBUG_)
132 if ( channel > frames.
channels() - nChannels ) {
133 oStream_ <<
"Bowed::tick(): channel and StkFrames arguments are incompatible!";
134 handleError( StkError::FUNCTION_ARGUMENT );
138 StkFloat *samples = &frames[channel];
139 unsigned int j, hop = frames.
channels() - nChannels;
140 if ( nChannels == 1 ) {
141 for (
unsigned int i=0; i<frames.
frames(); i++, samples += hop )
145 for (
unsigned int i=0; i<frames.
frames(); i++, samples += hop ) {
147 for ( j=1; j<nChannels; j++ )
148 *samples++ = lastFrame_[j];
STK ADSR envelope class.
Definition ADSR.h:25
StkFloat tick(void)
Compute and return one output sample.
Definition ADSR.h:115
STK biquad (two-pole, two-zero) filter class.
Definition BiQuad.h:26
STK bowed string table class.
Definition BowTable.h:23
STK bowed string instrument class.
Definition Bowed.h:41
void setFrequency(StkFloat frequency)
Set instrument parameters for a particular frequency.
Bowed(StkFloat lowestFrequency=8.0)
Class constructor, taking the lowest desired playing frequency.
StkFloat tick(unsigned int channel=0)
Compute and return one output sample.
Definition Bowed.h:104
void noteOn(StkFloat frequency, StkFloat amplitude)
Start a note with the given frequency and amplitude.
void startBowing(StkFloat amplitude, StkFloat rate)
Apply breath pressure to instrument with given amplitude and rate of increase.
void setVibrato(StkFloat gain)
Set vibrato gain.
Definition Bowed.h:56
~Bowed(void)
Class destructor.
void clear(void)
Reset and clear all internal state.
void stopBowing(StkFloat rate)
Decrease breath pressure with given rate of decrease.
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).
STK linear interpolating delay line class.
Definition DelayL.h:28
STK instrument abstract base class.
Definition Instrmnt.h:20
STK one-pole filter class.
Definition OnePole.h:21
STK sinusoid oscillator class.
Definition SineWave.h:26
An STK class to handle vectorized audio data.
Definition Stk.h:279
unsigned int channels(void) const
Return the number of channels represented by the data.
Definition Stk.h:416
unsigned int frames(void) const
Return the number of sample frames represented by the data.
Definition Stk.h:419
The STK namespace.
Definition ADSR.h:6