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Re: autocorrelation

From: Francesco Potorti`
Subject: Re: autocorrelation
Date: Tue, 19 Dec 2006 08:42:04 +0100

>> What is the reason why the autocorrelation (autocor.m) is
>> computed with a for loop rather than using fft?
>xcorr in the signal package at octave-forge uses fft.  It
>does it directly, though, so it is not as clean as what
>you wrote.

It is also different, in that it computes cross correlations between
columns.  I could write a replacement for autocor.m that uses direct
sums or fftconv depending on the length and number of requested vectors
to convolve.  Is there any interest into this?

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