X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/preprocessor/faust-0.9.47mr3/examples/faust-stk/brass.dsp diff --git a/interpreter/preprocessor/faust-0.9.47mr3/examples/faust-stk/brass.dsp b/interpreter/preprocessor/faust-0.9.47mr3/examples/faust-stk/brass.dsp new file mode 100644 index 0000000..fabaf01 --- /dev/null +++ b/interpreter/preprocessor/faust-0.9.47mr3/examples/faust-stk/brass.dsp @@ -0,0 +1,103 @@ +declare name "Brass"; +declare description "WaveGuide Brass instrument from STK"; +declare author "Romain Michon (rmichon@ccrma.stanford.edu)"; +declare copyright "Romain Michon"; +declare version "1.0"; +declare licence "STK-4.3"; // Synthesis Tool Kit 4.3 (MIT style license); +declare description "A simple brass instrument waveguide model, a la Cook (TBone, HosePlayer)."; +declare reference "https://ccrma.stanford.edu/~jos/pasp/Brasses.html"; + +import("music.lib"); +import("instrument.lib"); + +//==================== GUI SPECIFICATION ================ + +freq = nentry("h:Basic_Parameters/freq [1][unit:Hz] [tooltip:Tone frequency]",440,20,20000,1); +gain = nentry("h:Basic_Parameters/gain [1][tooltip:Gain (value between 0 and 1)]",1,0,1,0.01); +gate = button("h:Basic_Parameters/gate [1][tooltip:noteOn = 1, noteOff = 0]"); + +pressure = hslider("h:Physical_and_Nonlinearity/v:Physical_Parameters/Pressure +[2][tooltip:A value between 0 and 1]",1,0.01,1,0.01); +lipTension = hslider("h:Physical_and_Nonlinearity/v:Physical_Parameters/Lip_Tension +[2][tooltip:A value between 0 and 1]",0.780,0.01,1,0.001); +slideLength = hslider("h:Physical_and_Nonlinearity/v:Physical_Parameters/Slide_Length +[2][tooltip:A value between 0 and 1]",0.041,0.01,1,0.001); + +typeModulation = nentry("h:Physical_and_Nonlinearity/v:Nonlinear_Filter_Parameters/Modulation_Type +[3][tooltip: 0=theta is modulated by the incoming signal; 1=theta is modulated by the averaged incoming signal; +2=theta is modulated by the squared incoming signal; 3=theta is modulated by a sine wave of frequency freqMod; +4=theta is modulated by a sine wave of frequency freq;]",0,0,4,1); +nonLinearity = hslider("h:Physical_and_Nonlinearity/v:Nonlinear_Filter_Parameters/Nonlinearity +[3][tooltip:Nonlinearity factor (value between 0 and 1)]",0,0,1,0.01); +frequencyMod = hslider("h:Physical_and_Nonlinearity/v:Nonlinear_Filter_Parameters/Modulation_Frequency +[3][unit:Hz][tooltip:Frequency of the sine wave for the modulation of theta (works if Modulation Type=3)]",220,20,1000,0.1); +nonLinAttack = hslider("h:Physical_and_Nonlinearity/v:Nonlinear_Filter_Parameters/Nonlinearity_Attack +[3][unit:s][Attack duration of the nonlinearity]",0.1,0,2,0.01); + +vibratoFreq = hslider("h:Envelopes_and_Vibrato/v:Vibrato_Parameters/Vibrato_Freq +[4][unit:Hz]",6,1,15,0.1); +vibratoGain = hslider("h:Envelopes_and_Vibrato/v:Vibrato_Parameters/Vibrato_Gain +[4][tooltip:A value between 0 and 1]",0.05,0,1,0.01); +vibratoBegin = hslider("h:Envelopes_and_Vibrato/v:Vibrato_Parameters/Vibrato_Begin +[4][unit:s][tooltip:Vibrato silence duration before attack]",0.05,0,2,0.01); +vibratoAttack = hslider("h:Envelopes_and_Vibrato/v:Vibrato_Parameters/Vibrato_Attack +[4][unit:s][tooltip:Vibrato attack duration]",0.5,0,2,0.01); +vibratoRelease = hslider("h:Envelopes_and_Vibrato/v:Vibrato_Parameters/Vibrato_Release +[4][unit:s][tooltip:Vibrato release duration]",0.1,0,2,0.01); + +envelopeAttack = hslider("h:Envelopes_and_Vibrato/v:Envelope_Parameters/Envelope_Attack +[5][unit:s][tooltip:Envelope attack duration]",0.005,0,2,0.01); +envelopeDecay = hslider("h:Envelopes_and_Vibrato/v:Envelope_Parameters/Envelope_Decay +[5][unit:s][tooltip:Envelope decay duration]",0.001,0,2,0.01); +envelopeRelease = hslider("h:Envelopes_and_Vibrato/v:Envelope_Parameters/Envelope_Release +[5][unit:s][tooltip:Envelope release duration]",0.07,0,2,0.01); + +//==================== SIGNAL PROCESSING ================ + +//----------------------- Nonlinear filter ---------------------------- +//nonlinearities are created by the nonlinear passive allpass ladder filter declared in filter.lib + +//nonlinear filter order +nlfOrder = 6; + +//attack - sustain - release envelope for nonlinearity (declared in instrument.lib) +envelopeMod = asr(nonLinAttack,100,envelopeRelease,gate); + +//nonLinearModultor is declared in instrument.lib, it adapts allpassnn from filter.lib +//for using it with waveguide instruments +NLFM = nonLinearModulator((nonLinearity : smooth(0.999)),envelopeMod,freq, + typeModulation,(frequencyMod : smooth(0.999)),nlfOrder); + +//----------------------- Synthesis parameters computing and functions declaration ---------------------------- + +//lips are simulated by a biquad filter whose output is squared and hard-clipped, bandPassH and saturationPos are declared in instrument.lib +lipFilterFrequency = freq*pow(4,(2*lipTension)-1); +lipFilter = *(0.03) : bandPassH(lipFilterFrequency,0.997) <: * : saturationPos; + +//stereoizer is declared in instrument.lib and implement a stereo spacialisation in function of +//the frequency period in number of samples +stereo = stereoizer(SR/freq); + +//delay times in number of samples +slideTarget = ((SR/freq)*2 + 3)*(0.5 + slideLength); +boreDelay = fdelay(4096,slideTarget); + +//----------------------- Algorithm implementation ---------------------------- + +//vibrato +vibrato = vibratoGain*osc(vibratoFreq)*envVibrato(vibratoBegin,vibratoAttack,100,vibratoRelease,gate); + +//envelope (Attack / Decay / Sustain / Release), breath pressure and vibrato +breathPressure = pressure*adsr(envelopeAttack,envelopeDecay,100,envelopeRelease,gate) + vibrato; +mouthPressure = 0.3*breathPressure; + +//scale the delay feedback +borePressure = *(0.85); + +//differencial presure +deltaPressure = mouthPressure - _; + +process = (borePressure <: deltaPressure,_ : + (lipFilter <: *(mouthPressure),(1-_)),_ : _, * :> + : + dcblocker) ~ (boreDelay : NLFM) : + *(gain)*4 : stereo : instrReverb;