[vorbis] OGG Versus MP3

[Paul Martin]

On Mon, Mar 22, 2004 at 01:11:12AM +0200, Daniil V. Kolpakov wrote:
> ? ????????? ?? ??????? 19 ???? 2004 15:53 Sebastian Gesemann ???????(a):
> > IMHO it's a good idea to do so because we're usually not able to
> > perceive phase differences at higher frequencies.
> 
> Huh? I've always thought it was the _low_ frequences not sensible to
> the phase information. Think of 5.1, 2.1, etc systems - they all use
> that fact.

Phase information at low frequencies is sensed to some extent. It's not
as pronounced as within the speech band.

Above about 12kHz, the wavelength of the sound in air is less than the
distance between the ears, so phase discrimination is no longer as
useful. Relative timings should still be important on impulsive sounds.


-- 
Paul Martin <pm at zetnet.net> (work)
  <pm at nowster.zetnet.co.uk> (home)
--- >8 ----
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