[SciPy-User] Very simple IIR filters?

Ralf Gommers ralf.gommers@gmail....
Tue Oct 30 12:24:44 CDT 2012


On Tue, Oct 30, 2012 at 5:18 PM, Sturla Molden <sturla@molden.no> wrote:

> On 29.10.2012 20:43, Ralf Gommers wrote:
>
> > How much faster is "a bit"?
>
> They are so short that the extra overhead from scipy.signal.lfilter
> might double the run-time. On the other hand, they are so fast that it
> might not matter anyway. I.e. they will always be faster than other IIR
> filters we use with scipy.signal.lfilter.
>
> (And replicating the machinery of scipy.signal.lfilter takes a bit of
> work, i.e. filtering along axes, etc. So I am in favor of just computing
> the coefficients.)
>

Sorry for being dense, but I'm still not completely clear about what you're
planning to do now. I think I should read the above as "no Cython code".
Which sounds good to me.

Ralf
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