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Which of the following is a frequency domain specification?

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Which of the following is a frequency domain specification?

(a) 0 ≥ 20 log|H(jΩ)|

(b) 20 log|H(jΩ)| ≥ KP

(c) 20 log|H(jΩ)| ≤ KS

(d) All of the mentioned

The question was posed to me in a national level competition.

I would like to ask this question from Design of Low Pass Butterworth Filters topic in chapter Digital Filters Design of Digital Signal Processing

1 Answer

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Best answer
Right choice is (d) All of the mentioned

Easy explanation: We are required to design a low pass Butterworth filter to meet the following frequency domain specifications.

KP ≤ 20 log|H(jΩ)| ≤ 0

and 20 log|H(jΩ)| ≤ KS.

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