Since the author neglects to mention an example of "a patch-based environment (there are many of these for working with audio)" for audio, I will: - PD : http:

Since the author neglects to mention an example of "a patch-based environment (there are many of these for working with audio)" for audio, I will: - PD : http://puredata.info/ http://puredata.info/ which is based on (as opposed to "a clone of") - Max / MSP : http://www.cycling74.com/products/maxmsp http://www.cycling74.com/products/maxmsp PD can do (simple, afaik - I've never used it for that) video as well but where it really shines is in concocting all sorts of bizarre audio constructs.