[vorbis] Encoding speed reports (was: Choosing a processor)

Dan Hollis goemon at anime.net
Mon Jun 4 12:13:19 PDT 2001



On Mon, 4 Jun 2001, Jack Moffitt wrote:
> > Could vorbis do a modified LPC/CELP/GSM for extremely low bitrate
> > (300bps-9600bps) codings? Would be nice for a 'one codec does it all' type
> > thingy, instead of having to keep 30 different programs around...
> Unfortunately this area is heavily patented.  GSM has to my knowledge
> only one patent held by phillips. It's 13.5kbps and doesn't sound so
> hot.

Are we talking about the same thing?

I can't find any reference to Phillips patents on GSM 06.10.

> The better ones are patented to hell by cellphone companies, and
> some are probably still classified that hte military is using/used.

I don't think LPC-10 is classified... afaik LPC-10 is public domain and
the only bits classified about its implementation in the military is how
they use it with spread spectrum...

-Dan

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