phausto

Phausto is a library and API that allows to use the FAUST compiler and its libraries (Functional Audio Stream) inside Pharo

How to install

First, download the Phausto libraries for your platform, open the package, and place the librariesBundle folder into documents/Pharo/images/yourPhaustimage/

Then, copy and execute in a Playground

Metacello new
    baseline: 'Phausto';
    repository: 'github://lucretiomsp/phausto:main';
    load

Create a DSP from a valid string of FAUST code

"This content is Faust code inside a string"
content := 'import("stdfaust.lib"); 
tempo = hslider("tempo", 10000, 300, 20000, 100);
freq = hslider("freq", 300, 200, 900, 100);
process = ba.pulsen(1, tempo) : pm.djembe(freq, 0.3, 0.4, 1) <: dm.freeverb_demo;'.

"Create the DSP"
x1 := DSP create: content.
"Initialise the DSP"
x1 init.
"Start the DSP"
x1 start.

"If you want to change the parmeters, create faders and open them"
s := x1 sliderFor: 'tempo'.
s openInWindow.

s2 := x1 sliderFor: 'freq'.
s2 openInWindow 

s3 := x1 sliderFor: 'Freeverb/0x00/RoomSize'.
s3 openInWindow .

" and when you want to stop the sound" 
x1 stop.

Hello Phausto

"create a Sine wave Oscillator"
sine := SineOsc new.
"creates a stereo DSP from the Oscillator"
dsp := sine stereo asDsp.
"initialize the DSP"
dsp init.
"start the sound"
dsp start.
"stop the sound"
dsp stop.
"destroy the dsp when you no longer need it"
dsp destroy.

Get Funky

"Create two pulse generators, the first has its period changed by a LowFrequency Oscillator"
pulse1 := Pulsen new period: (LFOTriPos new freq: 0.2; offset: 0.05; amount: 4) .
pulse2 := Pulsen new period: 0.35.
"Create a djembe, triggered by pulse1"
djembe := Djembe new trigger: pulse1.
marimbaFreq := LFORandomPos new offset: 20; amount: 600; freq: (1 /0.35).
"Create a marimba, triggered by pulse2 and with the frequency modulated by an LFO with a random shape"
marimba := Marimba new trigger: pulse2; freq: marimbaFreq .
"Sum the marimba and the djembe patch them to a GreyHoleDW reverb and creates a dsp"
"The ChucK operator =>  it is our playful homage to the creators of ChucK, it simplfies and abstract the connections between Unit Generators"
dsp := (djembe + marimba => GreyHole new) stereo asDsp.

dsp init.
dsp start.
dsp stop.