Re: [microsound] FRPS - Fractally Reverse-Palindromic Soundwave

[Craque <craque@xxxxxxxxxx>]

my guess is that when the complex sound impulse of a duck's quack bounces 
off a surface and returns to the perceiver, it is phased in a mirror image 
(not reversed), and therefore cancels itself out. you would only hear the 
initial sound of the quack.

it's the same principal behind noise cancelling headphones.

....... Original Message .......
On Fri, 1 Apr 2005 16:15:32 +0200 "Davide Morelli" <info@xxxxxxxxxxxxxxxx> 
wrote:
>
>A duck's quack doesn't echo, and no one knows why
>
>http://flagonthemoon.blogspot.com/2005/03/fun-facts-about-animals.html
>
>is this true?
>anybody can explain this a little better?
>
>davide
___
http://craque.net

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