[tremor] MDCT_lookup tables reduced by one third.

[timmy brolin]

> By the way... What are the other four trignometric functions in mdct_lookup.h? It's hard to figure them out by just looking att the numbers and curves. (sine/cosine was pretty obvious thou..)

> Read the paper that describes the original algorithm.  The header on
> mdct.c isn't lying or anything :-)

The header on mdct.c might not by lying, but it doesn't tell much truth either.
I can't find the algorithms for the mdct_lookup tables anywhere, except, as Nicolas Pitre just pointed out,  in the original vorbiscode.

Timmy

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