Hi,
searching for DSP and measurement I discovered this project:
http://chuck.cs.princeton.edu/
Citation:
what is it? : ChucK is a new (and developing) audio programming language for real-time synthesis, composition, performance, and now, analysis - fully supported on MacOS X, Windows, and Linux. ChucK presents a new time-based, concurrent programming model that's highly precise and expressive (we call this strongly-timed), as well as dynamic control rates, and the ability to add and modify code on-the-fly. In addition, ChucK supports MIDI, OSC, HID device, and multi-channel audio. It's fun and easy to learn, and offers composers, researchers, and performers a powerful programming tool for building and experimenting with complex audio synthesis/analysis programs, and real-time interactive control.
ChucK works perfectly with JACK.
apt-get install chuck
A very simple program:
Code:
// connect sine oscillator to D/A convertor (sound card)
SinOsc s => dac;
1000 => s.freq;
// allow 2 seconds to pass
2::second => now;
Save as sinus.ck and run it:
chuck sinus.ck
you will hear a sinus for two seconds.
A more complex program from the tutorial:
Code:
// impulse to filter to dac
Impulse i => BiQuad f => dac;
// set the filter's pole radius
.99 => f.prad;
// set equal gain zero's
1 => f.eqzs;
// initialize float variable
0.0 => float v;
// infinite time-loop
while( true )
{
// set the current sample/impulse
1.0 => i.next;
// sweep the filter resonant frequency
Std.fabs(Math.sin(v)) * 4000.0 => f.pfreq;
// increment v
v + .1 => v;
// advance time
100::ms => now;
}
Save as moe.ck and run it:
chuck moe.ck
Stop it with ^C
hours of fun...
Ciao Martin |
