Hi Jochen, Check out the SndBuf ugen--its a wrapper around Erik de Castro Lopo's libsndfile, so it can handle a ton of (non-compressed) formats, including WAV and AIFF. See examples of usage here: http://chuck.cs.princeton.edu/doc/examples/basic/sndbuf.ck http://chuck.cs.princeton.edu/doc/examples/basic/valueat.ck Is that what you were looking for? spencer On Jan 19, 2007, at 5:13 PM, jochen lists wrote:

hi, sorry about this stupid question, but i can't seem to find any documentation on how to use chuck to process audio files, i.e. open a wav, aiff, whatever and run it through some filters. is this possible??? thx - jochen

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Hello... Use the SndBuf class to play a sample: http://chuck.cs.princeton.edu/doc/program/ugen_full.html#sndbuf Here's the example code from ChucK docs*: // the patch SndBuf buf => dac; // load the file "../data/snare.wav" => buf.read; // time loop while( true ) { 0 => buf.pos; Std.rand2f(.2,.9) => buf.gain; Std.rand2f(.5,1.5) => buf.rate; 100::ms => now; } *But note, that code is changing the gain and rate of the sample randomly - you would want a rate of 1.0 to just play the file at original speed/pitch. Anyway, you can just plug SndBuf it into a filter, set the filter ... and there you go! Oh and use WvOut to record ChucK output to a file: http://chuck.cs.princeton.edu/doc/program/ugen_full.html#WvOut "This class provides output support for various audio file formats. It also serves as a base class for "realtime" streaming subclasses... WvOut writes samples to an audio file... WvOut currently supports WAV, AIFF, AIFC, SND (AU), MAT-file (Matlab), and STK RAW file formats." Hope that helps. ~David On 1/19/07, jochen lists wrote:

hi, sorry about this stupid question, but i can't seem to find any documentation on how to use chuck to process audio files, i.e. open a wav, aiff, whatever and run it through some filters. is this possible??? thx - jochen

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