[vorbis] Ogg Vorbis in Audiograbber and more

[Aleksandar Dovnikovic]

"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.

Greetings,
Aleksandar

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