_design_notch_peak_filter(w0, Q, ftype, fs=2.0)
Normalized frequency to remove from a signal. If :None:None:`fs` is specified, this is in the same units as :None:None:`fs`. By default, it is a normalized scalar that must satisfy 0 < w0 < 1
, with w0 = 1
corresponding to half of the sampling frequency.
Quality factor. Dimensionless parameter that characterizes notch filter -3 dB bandwidth bw
relative to its center frequency, Q = w0/bw
.
The type of IIR filter to design:
The sampling frequency of the digital system.
Numerator ( b
) and denominator ( a
) polynomials of the IIR filter.
Design notch or peak digital filter.
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