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From: Bruno Luong on 16 Jun 2010 16:44
Gideon <gideon.simpson(a)gmail.com> wrote in message <d247b78c-aaf4-4f30-8b2d-796d1efa5d3a(a)h13g2000yqm.googlegroups.com>...

>
> This will be an O(N^2) computation, won't it?

If you use FFT-based convolution, it will be O(N*log(N)), but no need to worry about the complexity if the size of the data is not too large. One of such convolution on FEX is here:
http://www.mathworks.com/matlabcentral/fileexchange/24504-fft-based-convolution

Bruno
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