Find numerator and denumerator

2013 4 17
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Dear community,
How can I find filter coefficients (denumerator and numerator) of the butterworth filter?
Thanks in advance,
Andrew

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回答（1 个）

Mats
Mats 2013-4-17

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[B,A] = butter(n,Wn)
B are the coefficients for the numerator, and A the coefficients for the denominator with order n filter at normalized cutoff frequency Wn.

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Andrew
Andrew
2013-4-17

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