Notch filter applies a notch filter to the
given signal. A notch filter ideally suppresses a single frequency component
(the notch frequency) within the input signal, or a narrow symmetric window
around the notch frequency. A parameter for the width of the affected
frequency window is the relative transition width w, given as a fraction of the
notch frequency .
The transfer function H(f) of the notch filter is
with f denoting the frequency.
- the notch frequency f0 in reciprocal x-axis units and
- the relative transition width w ranging from 0 to 1.
y = NotchFilt(x,f0,w);
Gauss filter, High pass filter,
Low pass filter, Band pass filter