I think the theory behind this is a great deal more interesting than that video lets on. The idea started out as simple C programs piping characters to a UNIX audio device. But it's grown since then, now there's a web page that lets you create audio with Javascript expressions[1] (one of my favorite tracks from this scene was generated that way[2]).
There's some good blog posts about the origins of this[3], and music theory behind it[4]; both of which will go into more detail than I'd care to for a HN comment[3].
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[ 6.2 ms ] story [ 15.4 ms ] threadThere's some good blog posts about the origins of this[3], and music theory behind it[4]; both of which will go into more detail than I'd care to for a HN comment[3].
[1] http://wurstcaptures.untergrund.net/music/
[2] http://www.youtube.com/watch?feature=player_detailpage&v... (5m 13s)
[3] http://countercomplex.blogspot.co.uk/2011/10/algorithmic-sym...
[4] http://countercomplex.blogspot.co.uk/2011/10/some-deep-analy...