Hello,
Argh. 2nd time I mail to vorbis-dev@xiph.ogg (note the typo |-)
Anyway, what is the exact formula for the forward and reverse mdct?
And the blocklengths? My guess:
b_k = sum{j=0 to N-1) a_j cos(2k+1)(2j+1)/4N*PI (both mdct's)
blocklength is 256/2048 for short/long?
and the mdct window is some generic function, i.e. not always a sine window?
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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. :)> 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. --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/