inverse mdct throught fft
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inverse mdct throught fft

 
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hurry
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Posted: Fri Dec 09, 2005 3:36 pm    Post subject: inverse mdct throught fft Reply with quote
hi,

I`m doing a literature survey, to implement Imdct using FFT. please
advice me on an optimal algo. If possible pls mail me ppr of the algo /
the link .

regards,
hurry.
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hurry
Guest
Posted: Fri Dec 09, 2005 3:45 pm    Post subject: Re: inverse mdct throught fft Reply with quote
one more addition,

I had seen an implementations in C for the same (imdct thru fft) which
uses a technique like, piking up odd(say d[0] -> a real no.) and even
coeff(say d[1023] -> a real no.) of mdct and then pairing them into a
complex no. ( d[0] + i d[1023] ) followed by a twiddle factor and a fft
block followed by post twiddle factor.

I dont have this algorithm with me, if someone has a link to this ppr r
can mail the ppr, wud hlp me understand the math behind.

regards,
hurry.
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