[SciPy-user] filtering without phase shift
Mon Jul 23 22:43:10 CDT 2007
Ryan Krauss wrote:
> Is there a way to get magtitude
> attenuation without phase lag that is easy to implement and accepted
> as good practice among signal processing experts?
This is a very common problem in Biomechanics, where we often want to
take the second derivative of noisy signals.
Matlab has a filtfilt() function for applying a zero phase delay filter,
and I have seen a SciPy implementation here:
I can't comment on whether this implementation is "good". I'd like to
hear from any signal processing experts too. :-)
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