(resent) At 11:44 AM 6/13/03 -0400, Peter Wayner wrote: >At 9:27 AM +0200 6/13/03, Thomas Shaddack wrote: >>See also something about computer-generated music: >>http://brainop.media.mit.edu/online/net-music/net-instrument/Thesis.html
>> > > >I'm told someone is trying to encode information by ordering the >musical notes played in a chord with a Midi synthesizer. It's >possible to hide information in the order of a set using a technique >like this: > >http://www.wayner.org/books/discrypt2/sorted.php That's cute --there's no acoustic difference. There are also methods which produce nearly imperceptible differences --you can adjust the millisecond-scale timings, or the dynamics. Since these will vary with each performer's rendition anyway, they're fairly stealthy.
