[vorbis] new ogg stream

Erik Kruus kruus.erik at uqam.ca
Wed Sep 5 18:47:39 PDT 2001

The stuff I did last year poking holes in the vq lattices makes me
*guess* you might be able to peel around ~20% before things got
unbearable.  (One may do better, they are different in what 'bits'
get 'thrown away').  When you talk about halving the bitrate, you probably
need a retuned psy model, and to hit 32k, I think it will require
post-1.0 work on the core algorithms... Unless the peelable stream is
generated by only adding bits to the low-bitrate stream.  But vorbis'
peeling is more of an "incidentally-it-might-sound-OK" type rather than
"constructed-to-sound-reasonable" type as far as I understand.


Kenneth Arnold wrote:
> On Wed, Sep 05, 2001 at 05:40:45PM -0400, Kenneth Arnold wrote:
> > On Wed, Sep 05, 2001 at 02:34:45PM -0600, Jack Moffitt wrote:
> > > Thomas was gracious enough to provide a second stream of his beats.dk
> > > vorbis broadcast.
> > >
> > > http://vorbis.arkena.com:8004/test.ogg is 128kbps
> > > http://vorbis.arkena.com:8004/test_64.ogg is 64kbps
> > >
> > > Now even us lowspeed dsl people can enjoy :)
> >
> > Oh well, ran for a few seconds (max ~12, but output pretty decent with
> > prebuffering) on my 28.8 modem. But ogg123's curl streaming does
> > indeed work (if only briefly ;))
> Of course I forgot to say what I really sent the email for -- could
> someone peel that even more (either with the prototype peeling tool or
> cutting the sample rate) and try a 32k or less stream? Whoever was
> working on the peeling stuff, could you please post your work? I'd
> like to experiment with really-low bitrates. (or just get friends with
> cable modems to grab and peel the streams ;) Cable company has said
> 'cable modems in 6 months' four times now :(
> --
> Kenneth Arnold <ken at arnoldnet.net> / kcarnold / Linux user #180115
> http://arnoldnet.net/~kcarnold/
>   ------------------------------------------------------------------------------------------------------------------------------------
>    Part 1.2Type: application/pgp-signature

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