Xavier Amatriain wrote:
Hi Rich,
As Richard said the 1SFT data is ready to go into the IFFT. A different
story is what you need to do afterwards to
get a smooth synthesized sound. I am not sure what *window* you are
talking about because there are two involved in the
process. The analysis window, which by default is a BlackmanHarris92
with a 75% overlap. You need to multiply by the
inverse of this window after the SFFT. And then a completely independent
triangular window with a size equal to twice
the analysis hop and overlap 50%. This is the one in charge of getting a
smooth overlap and add process in place.
It would appear that the 1STF only provides for the (optional)
specification of ~one~ window, not two. So all the above is essentially
a priori knowledge that cannot be obtained solely from reading the file.
Which is why I still find the SDIF file format, so often, so inadequate
in terms of completeness and portability!
Richard Dobson
_______________________________________________
CLAM mailing list
[email protected]
http://www.iua.upf.es/mtg/clam
