[vorbis-dev] More mdct questions

[Segher Boessenkool]

> > > b_k = sum(j=0..4N-1) a_j * w_j * cos( (2k+1)(2j+1+-N) * PI / 8N ) // forward
> > > a_j = w_j * sum(k=0..2N-1) b_k * cos( (2k+1)(2j+1+-N) * PI / 8N ) // backward

Oh, and maybe +-2N instead of +-N

Math on a keyboard is kind of difficult, especially when the audience
don't all
speak TeX. Anyway, go to Google and search for mdct (or dct IV). You
will find it.

Ciao,

Segher

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