[vorbis-dev] Branch stuff

[Gregory Maxwell]

http://sound.media.mit.edu/mpeg4/audio/sqam/

Yes, the book problem seems to make shortblocks worse, in a way that
sounded like weird pre-echo... I suppose the books were bad enough to get
the sign wrong a lot and it decimated the output.. :)

On Sat, 27 May 2000, Monty wrote:

> > 
> > I've been playing with the current Monty branch and I've found a case
> > where it performs poorly. I havn't had a chance to verify the mainline
> > (network at home isn't working; System with good headphones isn't on net,
> > and I've only sneakernetted the branch)..
> 
> The current monty branch is using experimental 'B' codebooks, and I found
> during verification last night that these codebooks (although they work) are
> generated very suboptimally (ie, latticepare.c's paring heuristics are broken
> almost to worst case ;-)
> 
> If you replace the 'b' codebooks with the 'a' codebooks, you should get better
> results (in modes.h, replace occurences of 'res0b' with 'res0a').
> 
> Now, if *that*'s having trouble, I definately want to hear it.  I don't think I
> have a copy of the test sample you mention.
> 
> Monty
> 
> 
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