[vorbis] what quality ?

[fungus]

Rok Pape¾ wrote:
> 
> On Sunday 21 April 2002 06:48, Troy Telford wrote:
> 
>>Phase Stereo:  Makes use of the fact that the human ear is nearly deaf
>>to signal phase above 4kHz, meaning that the ear can't tell very well
> 
> Above 4kHz? Shouldn't this be below 4kHz?
> 

No...well, sort of.

It's all about the difference between the wavelength
and the distance betwen our ears.

High frequencies can be more that 360 degrees out of
phase with respect ot each other so the information
is useless for positioning. Similarly, very low frequencies
are also useless because the difference isn't enough.
There's only a narrow range of frequencies where the
phase difference is important for positioning, outside
that range it's more to do with the volume of sound
reaching each ear (and remember, there's a nice sound
absorbing mass in between the ears).

Working out the frequency of a sound which has a
wavelength the size of your head is left as an
exercise for the reader.

<p><p><p><p>--- >8 ----
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