[vorbis] bitpeeler

[Segher Boessenkool]

Sebastian Gesemann wrote:
> On Wed, 9 Apr 2003, Segher Boessenkool wrote:
>>No, because you can *losslessly* reencode a Vorbis file to a
>>better-peelable (or easier-peelable) file, or even to a newer
>>version of the Vorbis format, as long as that new format still
>>uses the same MDCT (or something very much like it) and the same
>>floor curves.
> 
> ... and the same window function and this and that ...

Windowing is an integral part of MDCT, so yes.

> I'm not sure if it is possible to reencode a vorbis file to
> a newer better-peelable vorbis-1 file.

I _am_ sure it is possible, though :)

 > This implies redisign
> of the (currently one-stage?) quantizing mechanism to multi-stage

Current streams already are multi-stage.

> VQ. - Yes, I'm aware that Vorbis supports multistage VQ. But
> i have absolutely no idea how this conversion should be done
> without introducing new quantizing errors. Do you ?

Yes.

<p>Segher

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