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Analog poles and zeros of elliptic filter are different from scipy #75
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Can you provide any particular examples? z, p, k = signal.ellip(4, 5, 40, 100, 'low', output='zpk', analog=True) This yields
Then I did the same thing in NWaves: var poles = PrototypeElliptic.Poles(4, 5, 40);
var zeros = PrototypeElliptic.Zeros(4, 5, 40); This yields
Essentially, it's identical to scipy's results (in NWaves the gain
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I worded that a bit confusingly. I didn't mean an analog filter, but a digital filter (poles and zeros are always analog!?). I know, analog filters are not supported in NWaves. |
The analog poles and zeros of the elliptic filter are different from scipy. Is this a bug or there are different elliptic prototype design?
https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.ellip.html#scipy.signal.ellip
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