Date: Tue, 11 Jan 2011 09:27:42 -0200
From: Lucas Zawacki <lfzawacki@gmail.com>
To: ChucK Users Mailing List <chuck-users@lists.cs.princeton.edu>
Subject: [chuck-users] Using Fourier Transform
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<AANLkTi=vBnKCqQoKaii3Bq1jscdnqqLd1j21PUkBsPPi@mail.gmail.com>
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Sup guys. This is not much of a ChucK question but here goes...

I have some free time now to experiment with ChucK and I dug up some
old emails from the list. There's one talking about analysing the
frequency of a given signal and the short answer was to use the FFT.

I decided I would try this aproach in order to receive input from my
guitar, match the frequency being played and then issue a MIDI event
to another synthesizing app. The problem is that I have a very
abstract understanding of the FFT (I've used it before to do simple
image processing). It does makes sense to me, e.g I can visualize in
my mind what the FFT of a simple sound wave would look like, but I
wasn't competent enough to extract the absolute pitch data that I
wanted.

Anyway can someone elaborate a little more on the topic of frequency
analisys or maybe point me to a good tutorial?

I think I'll start with the wikipedia article on the Fourier Transform
and see where it gets me...

--
http://www.twitter.com/lfzawacki
http://www.linesocode.wordpress.com


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End of chuck-users Digest, Vol 66, Issue 9
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