Fft would be useful  mapping the amplitude of bands of frequencies to whatever (perhaps youÂre doing this). You could also measure the centroid, which correlates to a brightness measure of the sound. From the centroid you can also determine the Âbigness of sound ie. how Âfull it sounds at a given moment.  IÂll look thru some of my code and forward the maths  its simple but I canÂt remember this early in the morning  and it shouldnÂt be too hard to write as a patch (and not in C). You could also determine the Âsegmentation of the sound using env~ ie. finding out where phrases begin and end, the length of phrases etc. Think someone out there has written a rhythm estimator patch or external which could be handy.
Cheers, iain
-----Original Message----- From: Andre Schmidt [mailto:andre@vju.info] Sent: Saturday, 11 May 2002 8:51 AM To: PD-LiST Subject: [PD] audio analyze ideas ?
hi,
i'm making an audio 2 visual patch and was wondering if any1 has any ideas what i could analyze on audio to be visualized. @ the moment i got:
- the frequency of loudest freguenzy
- volume
- L/R balance
and ofcourse fiddle~ & bonk~
(for the 1st use i'm only analyzing guitar/voice)
thnx -andre
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