Filters with the ___ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate...

Filters with the ___ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than –20/dB/decade/pole: 

(1) Butterworth (2) Chebyshev (3) Bessel (4) Elliptical 
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1 Answer

Answer :

Filters with the Chebyshev characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than –20/dB/decade/pole.

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