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Topic: alternative to conv command
Replies: 7   Last Post: Apr 29, 2011 10:18 PM

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Balachander Narasimhan

Posts: 39
Registered: 2/4/08
Re: alternative to conv command
Posted: Apr 29, 2011 3:08 PM
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Hi,

thanks for the reply. I am quite sure it is conv command. I step through the code and it takes 1min and 14s for a sequence of length 2048e3 in a 1.2 GHz cpu. Do you think this is resonable?

"Matt J" wrote in message <ipevo5$7p1$1@fred.mathworks.com>...
> "Balachander Narasimhan" <balxxxxxchand@whatever.com> wrote in message <ipev95$rkb$1@fred.mathworks.com>...
> > Hi,
> >
> > I have a long sequence to be convolved with a filter. The conv command is too slow for this. What is the alternative here?

>
>
> Do an FFT-based convolution?
>
> Failing that, why do you think that there should be a better alternative to conv? Is there some structure in this filter/sequence that can be exploited?
>
> If the sequence is long, it may not be CONV that is failing. You simply have a large computation to perform.




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