[vorbis] Question, problems re: Ogg Vorbis ..

[Segher Boessenkool]

> you know that there is a thing called temporal pre-masking, which
> actually means that one sound can mask another one that appeared
> before him ?! Looks a bit illogical, but there it is... :-)

This is actually quite easy to understand. There is quite a bit of
neural processing before the "sound" enters the brain, and not all
signal paths are the same length/speed. Sudden attacks in the
sound get to the brain faster than steady sounds.

There is a feedback mechanism between the brain and the ear, which
amplifies the formants of the sound. This explains concurrent masking
as well. Basically, the outer hair cells make an active feedback
mechanism.

If you want to know more of how human hearing works, look at the web
for words like "cochlea", "hair cells", "OHC", "oto-acoustic emissions",
"octopus cells", etc.

Browse around, there's quite some stuff to be found.

Hope this helps (a bit),

Dagdag,

Segher

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