[vorbis] Ogg Vorbis in Audiograbber and more
aldov at EUnet.yu
Sun Mar 4 10:52:07 PST 2001
"Mat Bettinson" <mat at eurogamer.net> wrote:
> GS> beta 4 does not use joint stereo. This is yet to be implemented. So
> GS> watch for significant quality/bitrate improvements when that happens.
> Indeed. I'm surprised it's not in, there's a good (fraunhoffer
> beating) one in LAME which is probably patent free?
Putting patent issues aside, lame's joint-stereo is rather rudimentary
(this actually isn't lame's fault - that's the way mp3 was designed)
because joint-stereo switching is estimated for a complete block -
so either the whole block is suitable for m/s coding, or it isn't -
some other newer formats like AAC have more sophisticated
joint-stereo because they can encode part of the spectrum using
m/s while leaving the rest in stereo - it's more efficient but also
a bit more complicated to implement.
But I don't know what kind of joint-stereo will be used in Vorbis.
--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the Vorbis