1-D digital filter runtime

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Peter Cook
Peter Cook on 27 Mar 2015
Commented: Star Strider on 27 Mar 2015
Quick question - Is there any computational savings to padding input arrays for the filter function to a power of 2?

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Star Strider
Star Strider on 27 Mar 2015
Not that I’m aware of. It would likely do the opposite. (It could also introduce artefactual ‘ringing’ in the output with a sharp transition to zeros.)
Also, use the filtfilt function if you have the Signal Processing Toolbox. It has the advantage of not introducing any phase distortion. The filter function does.
Star Strider
Star Strider on 27 Mar 2015
My pleasure!

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