All, 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?
Chuck
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