[vorbis-dev] Understanding of Vorbis coder

[Erik Kruus]

uggh.  Word attachment.  Two quick comments:

1) block diagram:  in my vorbis.on2.com decoder stuff is my version of a
block diagram for beta2(3?). That block diagram is now incomplete in that it is
missing recent additions such as (but not limited to):
 - a "feedback" link to touch up an amplitude parameter,
 - all channel coupling.
 (- and psy.c has been essentially completely rewritten since those days)
( Note: start off at http://www.mathdogs.com/vorbis-illuminated/ for an
  overview of the algorithm.  vorbis.on2.com is too technical for most
  folks )

2) "formant", to me at least, conveys phase info to be meaningful
(Are the zero locations not a vital part of a formant?)
The floor is purely an amplitude thing, so I wonder about the
correctness of calling the floor "formant-like".

Erik.

> If there are any
> other  additional block  /information pl. provide me
> with the same.
> Thanks and regards
> S.Padmashri

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