Re: AFT (Arithmetic Fourier Transform)

On Jan 16, 9:22 am, Vladimir Vassilevsky <antispam_bo...@xxxxxxxxxxx>
wrote:
Can you please suggest a good reading about the Arithmetic Fourier
Transform?

I searched through Google and the local university library; couldn't
find much of information.

Vladimir Vassilevsky
DSP and Mixed Signal Design Consultanthttp://www.abvolt.com

Interesting - I'd never heard of that one before. This appears to be
based on some math that's been around since the early 1900's and has
been rehashed in a lot of papers. Unfortunately they're all firewalled
at sites that want $$ to give access. The only detailed description I
found was this:

http://www.ligo.caltech.edu/docs/G/G030522-00/G030522-00.ppt

The big advantage: needs O(n) operations and all coeffs/twiddles are
+/-1.0.
The disadvantage: Requires non-uniformly sampled input so you need
some sort of interpolator at the input, although there has been some
discussion of using zero-order hold instead.

If you manage to dig up anything useful on this I'd be curious to know
more.

EB


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