[vorbis-dev] Branch stuff

Monty xiphmont at xiph.org
Sat May 27 13:27:15 PDT 2000



> 
> 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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