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Re: Circular convolution

From: Johan Kullstam
Subject: Re: Circular convolution
Date: 31 Oct 1999 07:56:41 -0500
User-agent: Gnus/5.070097 (Pterodactyl Gnus v0.97) Emacs/20.4

John Smith <address@hidden> writes:

> Is this a circular convolution routine?

no.  you do not want the zero padding.

given vectors a and b of the same length, do

  c = ifft(fft(a).*fft(b));

then c is the circular convolution of a and b.

J o h a n  K u l l s t a m
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