The universal notch filter can be used to filter out an undesired frequencies.
|•||Gain K: The filter gain K determines the low frequency gain of the filter.|
|•||Frequency fz: The filter attenuates at the zero frequency fz in Hz. Lower and higher frequencies will pass the filter. A lead in the phase response will start at this zero frequency fz.|
|•||Frequency fp: The filter amplifies at the pole frequency fp in Hz. The phase lead will stop at this pole frequency fp.|
|•||Damping dz: The filter damping of the zero dz indicates how steep the magnitude response will be at the frequency fz. More damping will result in a less steep behavior.|
|•||Damping dp: The filter damping of the pole dp indicates how steep the magnitude response will be at the frequency fp. Again, more damping will result in a less steep behavior.|
Transfer function of the filter: