[A6] Rich, rich, rich

[MelloT at aol.com]

In a message dated 5/18/2004 2:42:51 PM Pacific Standard Time, 
undertow at trance.org writes:
With a good 192Khz system (or a DSD system or a even a 96Khz system) you
can record a sine wave at 20Khz and reproduce it _exactly_. Even a FFT
analyse won't show any differences.
Note that you can easily hear the difference between a square wave and a sine 
wave at 10kHz. Nothing too special, it seems. Yet, the compoent that makes 
them different is harmonics - the first of which is a 30kHz tone above the 10k 
base fundamental. So the body can (somehow) perceive things above 20k, just as 
we can also perceive things below 20Hz without "hearing" it.

BK