Find numerator and denumerator

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Andrew on 17 Apr 2013

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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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Mats on 17 Apr 2013

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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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