You can find a whole family of windowing function Pd objects at
http://crca.ucsd.edu/~jsarlo/pd/
Joe jsarlo@ucsd.edu
----- Original Message ----- From: julien.breval@tremplin-utc.net To: pd-list@iem.at Sent: Saturday, November 15, 2003 12:16 PM Subject: [PD] FFT analysis window questions
Hello
I am currently working on phase vocoders, and I have two questions about the FFT in Pure Data
(1) When I use a [block~ 4096 8],
- the size of the FFT (~ number of analysis frequency bands) is 4096 and the
overlap is 8
- do the parameters of the [block~] object have an influence on the analysis
window size ? I mean, is it possible to use a window size of 1024 samples and an FFT size of 4096 ?
(2) Blackman / Blackman Exact / Blackman-Harris windows
I would like to use this kind of analysis windows, but I don't even know their mathematical formula ; does anyone know how to implement these under Pure Data, in the same way as the Hanning window is already implemented in most example patches ? (or the mathematical formulas at least)
THank you very much
PS : the phase locking vocoder example patch is truly good. Has anyone ported it to Max/MSP ?
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