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[Patch-gnuradio] Window functions

From: Martin Braun
Subject: [Patch-gnuradio] Window functions
Date: Fri, 6 Feb 2009 17:30:53 +0100
User-agent: Mutt/1.5.17 (2007-11-01)


I was working on some spectral estimation code when I noticed there is
no code for window functions in the C++ domain. I think this is pretty
basic functionality, so I added a patch which contains some basic window

I did not bother to export them to Python domain, since numpy comes with
some own window functions. The qa code is pretty basic, but should do
for these simple mathematical codes.

I put all of it in src/lib/filter (tapering is basically time-domain

There's a couple of common windows; one I would like to have put in but
didn't is the Kaiser window - if someone points me to a Bessel function
implementation in C++ I might add that one, too.

Here comes the patch.

Dipl.-Ing. Martin Braun           Phone: +49-(0)721-608 3790
Institut fuer Nachrichtentechnik  Fax:   +49-(0)721-608 6071
Universitaet Karlsruhe (TH)

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