[vorbis-dev] beta 2

[Fred Rastgar]

--- Monty <xiphmont at xiph.org> wrote:
> 
> My branch that I've been working on for the last few
> weeks is now the 
> mainline; once I add a few more modes (mode_A.h
> through mode_E.h, 
> corresponding roughly to 128,160,192,256,350 kbps
> stereo) and Mike Smith and 
> Chad get the modes into OggEnc, we'll be at beta 2.
> 
> A few things to note:
> 
> I'd been really really hoping that I'd squeeze the
> last bit of performance out 
> of non mid/side stereo to handle correlated noise
> (eg, voice) as smoothly as 
> LAME/mp3 with mid/side.  It's just not going to
> happen.  Compare them in mono 
> and Vorbis wins hands down.  With m/s, however, the
> resolution boost to mp3 is 
> too much to catch.  Of course, in a month or so,
> we'll have mid/side stereo 
> and then the winner will be clearly Vorbis across
> the board.  I'd simply hoped 
> to win on non-coupled stereo alone.  Oh, well.
> 
> (OTOH, the fact that a 64kbps mono Vorbis stream
> sounds as good as a 80kbps 
> mono mp3 is cause for happiness.  I just wanted more
> :-)
> 
> Also, the current modes setup is a temporary hack. 
> For one thing, submitting 
> a mode description in a huge struct hardwired into
> the lib will present a 
> binary compatability straightjacket.  I'll be
> changing that aspect of the API.
> 
> Lastly, I won't have all the modes I wanted in by
> noon tomorrow (eg, 96kbps 
> isn't there yet).  Hopefully all the others will be.
> 
> Monty
> 
> 
> 
> --- >8 ----
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--- >8 ----
List archives:  http://www.xiph.org/archives/
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