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butterworth passband filter transfer function in matlab

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djamaleddine djeldjli
评论： djamaleddine djeldjli 2018-6-26
hello,
i am using the function butter as a butterworth passband filter but i need its transfer function order n
thanks in advance

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Star Strider
Star Strider 2018-6-26
The butter function returns the numerator polynomial ‘b’ and denominator polynomial ‘a’ of the transfer function as vectors if you request it:
[b,a] = butter(n,Wn,ftype)
See the documentation for details.

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