Re: [Help-gsl] Mixed-Radix FFT problems

[Brian Gough]

mosborne writes:
 > I have been able to get the Radix-2 FFT to work just fine.
 > When I try to use the Mixed-Radix FFT for some values of n I
 > get a correct transformation, but for others I only get
 > maybe 1 frequency component or nothing at all, it's quite
 > random. It does not say in the documentation if you are
 > suppose to zero-pad your data until a multiple of 2 is
 > reached, but that is the only way I can see getting the
 > Mixed-Radix to work. Any suggestions?

See the N=630 example in the manual for the calling conventions.
Mixed radix ffts are part of the test suite so they are known to work.

-- 
Brian Gough

Network Theory Ltd,
Publishing Free Software Manuals --- http://www.network-theory.co.uk/