[racket] Audio input

From: Danny Yoo (dyoo at hashcollision.org)
Date: Mon May 21 20:11:10 EDT 2012

> A couple of my students are toying with the idea of generating pseudorandom numbers from ambient sources, and want to try using audio as a source.

Perhaps John Clements' Portaudio bindings would be a
platform-independent way to get sound from the microphone.


Hmmm... but the documentation doesn't say how to use the bindings to
access the microphone though.  Does anyone else know how to get at the
mic via portaudio?

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