Third-party FFT (fast Fourier transform) code
This directory contains the third-party one- and two-dimensional
fast Fourier transform and related sinusoidal transform code written
by Takuya Ooura.
Depending on your needs, there may be better choices than this
package, e.g.:
1. David Talkin has written a fast and flexible radix-2 FFT class:
google3/speech/dsp/fft.h
2. fftw (http://www.fftw.org/) likely offers speed advantages over the
routines in this package and undoubtedly has a much larger user base.
However, it's a much bigger and more complex package.
Package origin URL:
-------------------
http://momonga.t.u-tokyo.ac.jp/~ooura/fft.html
Version:
--------
"fft2d.tgz (53KB) updated: 2001/11/22"
md5sum fft2d.tgz: c02e1826a34a06ad1413209843c8e80f fft2d.tgz
License:
--------
See the bottom of fft2d/readme2d.txt.
My (popat's) reading of it is
licenses = ["notice"],
Downloading and unpacking history:
----------------------------------
Tue Jun 6 14:29:50 2006:
wget http://momonga.t.u-tokyo.ac.jp/~ooura/fft2d.tgz
tar xzf fft2d.tgz
rm fft2d.tgz
liiir1985
7f62dcda9f