[vorbis-dev] mdct
Segher Boessenkool
segher at eastsite.nl
Tue Aug 15 05:30:47 PDT 2000
> On Tue, 15 Aug 2000, Segher Boessenkool wrote:
>
> > blocklength is 256/2048 for short/long?
>
> It's not fixed in the format, just must be a power of two. :)
Okay, but what are the sizes used _now_?
Need to know to unroll my loops :-)
My mdct thingy is a recursive function (actually, two mutually recursive
functions: a dct II and a dct IV).
>
> > and the mdct window is some generic function, i.e. not always a sine window?
>
> It's called the 'vorbis window' it's documented in the source.
The sin(sin) thing still? Weird function. But no sin window. OK.
Ciao,
Segher
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