[plug]audio cds, was slowdown probs

[Colin Muller]

On Thu, Aug 23, 2001 at 10:40:19PM +0000, Mike wrote:

> It is actually possible for the human ear to be aware of frequencies
> far higher then 20KHz. It depends on a number of factors, from what
> I recall of the physics - the hairs in the cochlea can go into
> sympathetic resonance if stimulated with frequencies a multiple
> higher then their normal sensitivity. The only problem is the power
> levels need to be very high and the ears capacity to discriminate
> falls off considerably.

As implied by your "aware of" and elsewhere in your post, there is
also the likelihood that either our ears or other parts of our bodies
respond to "sounds" (vibrations) which are outside our range of
hearing, and that some of the emotive power of music may be
attributable to these non-audible vibrations - which, if it's true,
makes the restriction of recordings to the audible frequency range
rather simplistic.

Colin