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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.
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Star Strider
Star Strider on 27 Mar 2015
My pleasure!

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