[SciPy-Dev] Algorithm for butterworth filter implementation
Sturla Molden
sturla at molden.no
Sun Jul 22 08:34:27 EDT 2012
You probably did the common mistake of assuming an N-order LP followed by an N-order HP produces an N-order BP. That is not an algorithmic issue.
Sturla
Den 21. juli 2012 kl. 23:33 skrev Bogdan Cristea <cristeab at gmail.com>:
> Hi
>
> Could someone provide me with some hints about the algorithm used to compute
> the coefficients for the butterworth filter found in scipy ? I am interested
> in the passband version of this filter since concatenating a low pass and a
> high pass filter does not produce the same frequency response as the passband
> filter provided by scipy.
>
> thanks
> --
> Bogdan
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