scipy.signal.

buttap

scipy.signal.buttap(N, *, xp=None, device=None)

Return (z,p,k) for analog prototype of Nth-order Butterworth filter.

The filter will have an angular (e.g., rad/s) cutoff frequency of 1.

Parameters:

Nint

The order of the filter

xparray_namespace, optional

Optional array namespace. Should be compatible with the array API standard, or supported by array-api-compat. Default: numpy

device: any

optional device specification for output. Should match one of the supported device specification in xp.

Returns:

z, p, k

Poles, zeros and gain for the filter prototype

See also

butter

Filter design function using this prototype