haven't read a physics textbook in a while, but i believe what sean is describing is called "destructive interference"
From: "Sean Westergaard" <seawes@allmusic.com> To: "serge dautricourt" <sergedautricourt@hotmail.com>,<zorn-list@mailman.xmission.com> Subject: RE: ROVA etc./ Soulseek? Date: Wed, 12 Feb 2003 08:45:10 -0500
Bruce Ackley and Larry Ochs did thing with sustained notes, its hard to descibe, but its
as
if they made their frequncies clash at certain intervals, giving the listener a strange 'buzz' in their ears.
i think it's called "beating" and it's when the 2 soundwaves are slightly off and cause wave cancellation. I've seen Marshall Allen and Danny Davis do it with Sun RA. you can also do it with 2 recordings playing at slightly different speeds
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