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Re: FFTs in IDL [message #5880 is a reply to message #5760]

Tue, 27 February 1996 00:00

Sergei Senin
Messages: 23
Registered: February 1996

Junior Member

Achim Hein <hein@maxwell.nv.et-inf.uni-siegen.de> wrote:
> It seems so, but I think a Fourier-Transform-Algorithm has to
> run for every array length and ist is IDL or MathLab that shows
> correct transformation results for every array length. The algorithm
> using no base two array length works a lot slower but he has to be correct or
> not ?

As far as I understand the FFT pro in PV-Wave is using the basic Cooley - Tukey
algorithm which works best with the arrays that are power of two. There is a
number of better routines, one, for instance written by Ron Mayer which
includes many optimizations and is quite fast.

I wonder if anybody ( I mean users ) managed to write or adopt any other than
the abovementioned "basic" pro for the Wave....

Cheers

--
Sergei Senin
University of Portsmouth
Department of Electrical and Electronic Engineering
Microwave, Telecommunications and Signal Processing Research Group
Anglesea Building, Anglesea Road,
Portsmouth,P01 3DJ,England.
ss@ee.port.ac.uk, http://www.ee.port.ac.uk:80/~ss-www/

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[Message index]

		FFTs in IDL By: tom on Thu, 15 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Fri, 23 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00

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