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# scipy.signal.band_stop_obj

`scipy.signal.``band_stop_obj`(wp, ind, passb, stopb, gpass, gstop, type)

  Band Stop Objective Function for order minimization.

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

  Parameters: | wp : scalar Edge of passband passb. ind : int, {0, 1} Index specifying which 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).