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What type of filter is an antialiasing filter?(a) Band pass(b) High pass(c) Low pass(d) Band stopI had been asked this question in quiz.This intriguing question originated from Data Conversion topic in portion Digital Communication Techniques of Avionics

Answer»

Correct choice is (c) Low pass

To explain: The antialiasing filter is BASICALLY just a low pass filter which allows signals with FREQUENCIES LESS than the CUT off value to pass through. The cut off frequency is usually half of the SAMPLING frequency.



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