Pd or "pure data" was developed by Miller Puckette, and you can get more info about him and his at his website. He and Philippe Manoury came to MSU in the fall of 2005 and performed Manoury's piece En Echo using Pd, and I've been learning to work with the software ever since.

Miller Puckette has some documentation on his website, but I'm working on some more basic instructions:

Here is what I have made so far:

On the left are pictures of the pd patches, in the middle are links to more information, and the actual files are on the right. Right-click (or ctrl-click) and say "save link as..."

this is my first reproduction of the tonal memory game, "simon" simon.pd 18kb
this is the patch for my first real pd piece, which uses randomly generated pentatonic notes and slices of input or looped audio humanpiece.zip 585kb
my aleatoric tone generator (ATG). It does randomly generated background noise and tones. environment1.pd 34kb
this detects the picth of an audio signal and compares it to its closest midi value tuner.pd 4kb
this is the patch i'm working on for my first pd piece, using guitar. it loops like a sustain pedal guitarpiece.pd 960kb
this is an older version of the looper in my guitar piece slicelooper2.pd 952kb
a sampler with controls for start & end points, speed, volume, pan and midinote assignment sampler1.pd 30kb
a synthesizer that follows the pitch of an audio signal that i will use for nate147 pitchfollow147.pd 9kb
a sequencer playing back slices of a sample using sliders for start and end points slice.pd 10kb
this plays a loop with pitch specified by a midi input: can tune the sample's pitch to a concert pitch, or to the original pitch on C4 pitchloopomni.pd 7kb
this has an interesting sampler, a sequencer, a synthesizer, a mixer and a delay unit out of the send in the mixer sssmd.pd 9kb