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From: ADLER1%BRANDEIS.BITNET@wiscvm.wisc.EDU
Newsgroups: comp.lang.c
Subject: Fast Fourier Transform
Message-ID: <8420@brl-adm.ARPA>
Date: Thu, 23-Jul-87 00:18:56 EDT
Article-I.D.: brl-adm.8420
Posted: Thu Jul 23 00:18:56 1987
Date-Received: Sat, 25-Jul-87 03:18:58 EDT
Sender: news@brl-adm.ARPA
Lines: 14

I have noticed recent messages requesting software which performs fast fourier
transforms. A friend of mine has been working on this. If you are interested
in purchasing what he has, you can contact him directly from the information
below. He is not a subscriber to INFO-C but when I told him about the interest
in FFT code he drafted the following reply and asked me to post it on the net.

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     With regard to your request for FFT code in C, I may have what you need.
I have written routines based on the Cooley-Tukey algorithm to perform forward
and inverse transforms of real and complex arrays, Hamming windowing,
conversion between sine-cosine and phase-amplitude representations, and power
spectrum calculation.  You may contact me on BitNet at ERICHSEN@SBBIOVM.BITNET ;
address correspondence to the attention of Tom Schotland.
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