[PD] FFT convolution with vasp
gr at grrrr.org
Sat Feb 3 17:03:48 CET 2007
sorry for not anwering earlier - i'm abroad an not very netty at the
VASP offers non-granular Fourier transformation, which enables non-
Convolution translates to multiplication in the spectral domain,
therefore just fourier-transform your two buffers (zero-padded to
the same size) into the spectral domain, multiply the results,
transform back, there you go.
Am 02.02.2007 um 19:42 schrieb Kevin McCoy:
> Hello all,
> I would like to hear how some FFT-based convolution sounds with
> VASP, which claims to leave fewer artifacts than the hann-windowed
> realtime FFT, but the included example "convolution" does not
> produce results for me - I load the sound files and send them to
> the tables via wedit but the final table (I think it's called
> buf_res) does not receive anything - in other words, no results.
> I'm looking to do something like the "timbre stamp" FFT example in
> Pd's documentation - I've gotten so many wild and beautiful sounds
> from running tabread4~ based samples against each other through
> this, but the quality is not always very crisp. If anyone has any
> patches or info, let me know.
> PD-list at iem.at mailing list
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