[SciPy-User] Very simple IIR filters?
Travis Oliphant
travis at continuum.io
Mon Oct 29 11:56:29 EDT 2012
On Oct 29, 2012, at 8:09 AM, Sturla Molden wrote:
> I have noticed that scipy.signal lacks the simplest class of IIR filters
> (in fact the one I use most frequently). Specifically:
>
> - RC (single-pole)
> - Notch
> - Band-pass (inverted notch)
> - Anti-DC (zero at DC)
>
> These are of course very easy to construct and use with sp.signal.filter
> (and/or filtfilt). But I think it might be beneficial for some users to
> have them in scipy.
>
> Due to their size, they can be make a bit faster by running the loop in
> Cython instead of using sp.signal.filter (though I've never had use for
> this optimization).
>
> Would this be a useful contribution?
I think so.
-Travis
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> Sturla
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