42 Brass( StkFloat lowestFrequency = 8.0 );
63 void noteOn( StkFloat frequency, StkFloat amplitude );
72 StkFloat
tick(
unsigned int channel = 0 );
93 StkFloat slideTarget_;
94 StkFloat vibratoGain_;
95 StkFloat maxPressure_;
99inline StkFloat Brass :: tick(
unsigned int )
101 StkFloat breathPressure = maxPressure_ * adsr_.
tick();
102 breathPressure += vibratoGain_ * vibrato_.tick();
104 StkFloat mouthPressure = 0.3 * breathPressure;
105 StkFloat borePressure = 0.85 * delayLine_.lastOut();
106 StkFloat deltaPressure = mouthPressure - borePressure;
107 deltaPressure = lipFilter_.tick( deltaPressure );
108 deltaPressure *= deltaPressure;
109 if ( deltaPressure > 1.0 ) deltaPressure = 1.0;
112 lastFrame_[0] = deltaPressure * mouthPressure + ( 1.0 - deltaPressure) * borePressure;
113 lastFrame_[0] = delayLine_.tick( dcBlock_.tick( lastFrame_[0] ) );
115 return lastFrame_[0];
120 unsigned int nChannels = lastFrame_.
channels();
121#if defined(_STK_DEBUG_)
122 if ( channel > frames.
channels() - nChannels ) {
123 oStream_ <<
"Brass::tick(): channel and StkFrames arguments are incompatible!";
124 handleError( StkError::FUNCTION_ARGUMENT );
128 StkFloat *samples = &frames[channel];
129 unsigned int j, hop = frames.
channels() - nChannels;
130 if ( nChannels == 1 ) {
131 for (
unsigned int i=0; i<frames.
frames(); i++, samples += hop )
135 for (
unsigned int i=0; i<frames.
frames(); i++, samples += hop ) {
137 for ( j=1; j<nChannels; j++ )
138 *samples++ = lastFrame_[j];
STK ADSR envelope class.
Definition ADSR.h:25
STK biquad (two-pole, two-zero) filter class.
Definition BiQuad.h:26
STK simple brass instrument class.
Definition Brass.h:36
void startBlowing(StkFloat amplitude, StkFloat rate)
Apply breath pressure to instrument with given amplitude and rate of increase.
void setLip(StkFloat frequency)
Set the lips frequency.
void noteOff(StkFloat amplitude)
Stop a note with the given amplitude (speed of decay).
~Brass()
Class destructor.
StkFloat tick(unsigned int channel=0)
Compute and return one output sample.
Definition Brass.h:99
void controlChange(int number, StkFloat value)
Perform the control change specified by number and value (0.0 - 128.0).
Brass(StkFloat lowestFrequency=8.0)
Class constructor, taking the lowest desired playing frequency.
void setFrequency(StkFloat frequency)
Set instrument parameters for a particular frequency.
void clear()
Reset and clear all internal state.
void stopBlowing(StkFloat rate)
Decrease breath pressure with given rate of decrease.
void noteOn(StkFloat frequency, StkFloat amplitude)
Start a note with the given frequency and amplitude.
STK allpass interpolating delay line class.
Definition DelayA.h:29
STK instrument abstract base class.
Definition Instrmnt.h:20
STK one-pole, one-zero filter class.
Definition PoleZero.h:22
STK sinusoid oscillator class.
Definition SineWave.h:26
StkFloat tick(void)
Compute and return one output sample.
Definition SineWave.h:99
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