[vorbis-dev] Psychoacoustic model
segher at kernel.crashing.org
Fri Feb 6 04:47:00 PST 2004
> AFAIK, the codebooks for VQ are fixed. There is a utility called
> rehuff, written by Segher Boessenkool IIRC, which calculates
> codebooks based on the specific file. Search the archives for it
> for more information.
Rehuff keeps the codebooks the same; it just changes the lossless
coding per codebook to be optimal (i.e., it computes the best
possible static huffman coding per codebook).
On typical streams, it only helps a few percent.
And it still has problems with some vcut' streams.
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