[PD] FFT analysis window questions
julien.breval at tremplin-utc.net
julien.breval at tremplin-utc.net
Sat Nov 15 21:16:17 CET 2003
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 ?
More information about the Pd-list
mailing list