For vbr, I don't think we should forbid js for 160k and higher frames. It
would produce some bigger files.
Moreover, it would nearly forbid 160k in vbr:
imagine 128k is not enough. So the encoder switch to 160k. But at 160k, it
would switch to regular stereo. Switching to regular stereo, 160k might
probably not be enough, so we'll use 192k.
Using this, 160 would be only rarely used, and this is perhaps not the best
idea.
Gabriel Bouvigne - France
[EMAIL PROTECTED]
icq: 12138873
MP3' Tech: www.mp3tech.org
----- Message d'origine -----
De : Mark Taylor <[EMAIL PROTECTED]>
� : <[EMAIL PROTECTED]>
Envoy� : mercredi 16 juin 1999 07:27
Objet : [MP3 ENCODER] mid/side stereo at 160kbs?
>
> I recently got an email from Tero Auvinen pointing out that the
> FhG encoder does not use joint stereo at bitrates above 160kbs.
>
> Should we mimic this in LAME? Make the default "-m s" for bitrates
> 160 and higher? (jstereo could still be turned on by specifing
> "-m j".)
>
> And what about VBR frames? Turn off jstereo for 160kbs & higher frames?
>
> I'm tempted by this because LAME's mid/side stereo switching criterion
> has some flaws as compared to FhG's. I have been trying a new
> algorithm from that Johnston & Ferreira paper, but it still needs
> a lot of work.
>
> Mark
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