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band_stop_obj(wp, ind, passb, stopb, gpass, gstop, type)

Returns the non-integer order for an analog band stop filter.

Parameters

wp : scalar

Edge of passband :None:None:`passb`.

ind : int, {0, 1}

Index specifying which :None:None:`passb` edge to vary (0 or 1).

passb : ndarray

Two element sequence of fixed passband edges.

stopb : ndarray

Two element sequence of fixed stopband edges.

gstop : float

Amount of attenuation in stopband in dB.

gpass : float

Amount of ripple in the passband in dB.

type : {'butter', 'cheby', 'ellip'}

Type of filter.

Returns

n : scalar

Filter order (possibly non-integer).

Band Stop Objective Function for order minimization.

Examples

See :

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GitHub : /scipy/signal/_filter_design.py#3571
type: <class 'function'>
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