What are possible areas of application of a Notch filter which is tunable in the range 500 Hz to 5 kHz?

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Josef Punčochář

Rather, it would be interesting schema of this filter.

U. Dreher

Though the frequency limits do not match exactly: to suppress an interfering "pilot tone" within the audio spectrum (small-band audio - "analog telephone quality"). This spectrum applies as well for analog wireless AM audio transmission.

Amipara Manilal D

Audio system, Musical instruments (Tx & Rx) can use it. In a stereo system, to listen particular voice and eliminate certain freq., Speech analysis etc are the area of application. There are two important aspects for wider use.

1) It should be programmable and selectable for required elimination with ref to time.

2) Its bandwidth of elimination (Narrow band capability)

There is no mention about it but it can make more versatile

Avishek Adhikary

Thank You all. This will help us a lot.