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The attenuation rate is also called?(a) Roll off(b) Roll in(c) Envelope delay(d) RippleI have been asked this question in my homework.This question is from Filters topic in portion Fundamentals of Electronics of Avionics

Answer»

Correct choice is (a) Roll off

The EXPLANATION is: Roll off is also called the ATTENUATION rate, roll-off is the rate of change of amplitude with frequency in a filter. The faster the roll-off, or the higher the attenuation rate, the more selective the filter is, i.e., the better able it is to DIFFERENTIATE between two closely spaced signals, one desired and the other not.



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