[vorbis-dev] another entropy coder that might be very useful

[Monty]

> (M)DCT is several dB better than FFT to decorrellate
> signals, i know. But then, you say yourself "mostly uncorrelated",
> and compression is about finding correlation.

Actually, perceptually lossy compression is more about discarding
irrelevant/imperceivable information rather than classic redundancy
elimination.  Lossless compression is an entirely different thing and
is indeed about finding correlation.

Naturally, entropy encodings of various kinds are useful even in lossy
encoding; the remaining results from culling 'unneeded' information
out of the MDCT are often correlated/symbolic, and it is easier to
treat eliminating redundancy in theis symbolic information as a
seperate/divorced step (as Vorbis mostly does).

Monty
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