Answer:
A bandstop filter should be used to remove the 60 Hz humming component of the signal.
A bandstop filter basically allows all the frequencies above and below a specific frequency that is 60 Hz in this case.
Therefore, only the 60 Hz component of the signal will be attenuated and the rest of the frequency components in the signal will not be affected.
Step-by-step explanation:
There is a really strong 60 Hz hum (noise) due to the AC power being provided to your system.
We wish to reduce the effect of this humming but not any other frequency content in the signal.
So we need a filter that can reject a particular frequency but allow any other frequencies present in the signal.
A bandstop filter would get the job done.
A bandstop filter basically allows all the frequencies above and below the specific frequency that is 60 Hz in this case.
Therefore, only the 60 Hz component of the signal will be attenuated and the rest of the frequency components in the signal will not be affected.
The notch frequency in this case is 60 Hz which is the frequency at which maximum attenuation occurs.
The typical frequency response of a bandstop filter is attached below.