One might, a priori, suspect that two strings of a
course would occasionally vibrate 180 degrees out
of phase, cancel each other, and produce no sound.
I wonder why this never happens in the real world.
I understand that such cancellation is the basis
of beats (eg, as used by piano tuners). But
Herbert,
Your point is well taken, I now concede to the cheese maker from NYC.
Michael Thames
www.ThamesClassicalGuitars.com
- Original Message -
From: Herbert Ward [EMAIL PROTECTED]
To: lute@cs.dartmouth.edu
Sent: Tuesday, April 05, 2005 9:24 AM
Subject: Complete cancellation of sound
the facile answer.
I was going to say that if you had a little demon suspended between the
two strings the beats would come closer to complete cancellation of
sound, and observers farther away wouldn't experience the cancellation, but
no, we're not hearing the string's vibrations. My Soloette has
i don't have the science to even attempt this but on
the same principle, i once thought that a hand help
loudspeaker (voice gun) could be attached to a
multiple sound producing oscilator of some sort, aimed
at any offending (LOUD!) noise and neutralize it at
source. sort of a getto-buster instead
... different amplitudes for various harmonics ...
Different phases too.
If I wanted to speculate even more, I'd wonder if there's any coupling
between the strings that would disfavor having them stay 180 out of
phase.
Interesting and plausible idea.
... But that's the facile
i don't have the science to even attempt this but on
the same principle, i once thought that a hand help
loudspeaker (voice gun) could be attached to a
multiple sound producing oscilator of some sort, aimed
at any offending (LOUD!) noise and neutralize it at
source.
There'd be so much
