[Numpy-discussion] chirp-z

[Stefan van der Walt]

On Sat, May 26, 2007 at 10:37:41PM -0600, Charles R Harris wrote:
> I have been looking around for chirp-z code with a useable license. There is
> the original fortran version by Rader et. al. out there, as well as a package
> from FreeBSD at
> http://ftp2.at.freebsd.org/pub/FreeBSD/distfiles/fxt-2006.12.17.tgz. The latter
> is c++ and relies on function signatures to distinguish various functions with
> the same name, but looks pretty easy to translate. I note that we could
> probably use an fast_correlate also. Is there any interest in adding these to
> the fft pack? Or do they properly belong in scipy?

The thread here:

http://www.mail-archive.com/numpy-discussion@scipy.org/msg01812.html

contains an implementation.  Since it uses the FFT to do its
underlying calculations, it's pretty fast.

Cheers
Stéfan