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Re: complex output of pwelch

From: Paul Kienzle
Subject: Re: complex output of pwelch
Date: Sun, 11 Mar 2007 13:29:51 -0400

On Mar 11, 2007, at 1:56 AM, Dmitri A. Sergatskov wrote:

I noticed that at some moment I started getting
a complex output while doing
b = pwelch(a)
(which must be real).
The imaginary part is order of eps, but it is still an annoyance.
Should we put
Pxx = real(Pxx)
or there a better fix?

I modified pwelch.m to use real(x.*conj(x)) instead of conj(x). It should now be available on octave-forge.

- Paul

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