Processing <- -> ChucK Demo


Copyright 2007 Arthur Clemens, http://visiblearea.com
License: MIT License, http://www.opensource.org/licenses/mit-license.php



INTRODUCTION

This demo shows how to let a Processing sketch interact with ChucK.
Communication is done using the OpenSound Control (OSC), the defacto communication protocol for computers and synthesizers.

I have used the OSCp5 library for Processing (see links below).

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.




THE DEMO

The demo loads 5 audio files. Volume and panning values are calculated by Processing and sent to ChucK. ChucK analyses the sound spectrum and sends back analysis data. 

This is a non-interactive sketch, but interactivity would be trivial to add (see also http://visiblearea.com/blog/bin/view/VisibleArea/ProcessingandChucKHelloWorlddemo).




HOW TO RUN THE DEMO

* Install ChucK
* Run the demo




HOW TO FURTHER DEVELOP WITH PROCESSING

* Install ChucK
* Install Processing
* Add OSCp5 to the Processing libraries




REMARKS

Unfortunately ChucK does not play MP3s, but it understands WAV, AIFF, SND (AU), MAT-file (Matlab), and STK RAW files.




CLASSES

* Class 'ChuckController' manages the ChucK VM, starting of OSC and dispatching of OSC messages.
* Class 'ChuckAttendant' lets ChucK know Processing is alive. Receiving ChucK application 'monitor.ck' will stop ChucK as soon as it no longer receives any input.
* Base class 'Chuck' frames the basic functionality for subclasses.
* Chuck subclass 'DemoFilePlayerChuck' is used for example purpose only.




LINKS

Processing
http://processing.org

ChucK
http://chuck.cs.princeton.edu/

OSCp5
http://www.sojamo.de/iv/index.php?n=11

More info:

ChucK RollOff analysis
http://chuck.cs.princeton.edu/doc/program/uana_full.html#RollOff

OSC
http://www.cnmat.berkeley.edu/OpenSoundControl/