Question

Which of the following parameters are used to determine zeros of the filter?

(a) {bk}

(b) {ak}

(c) {bk} & {ak}

(d) None of the mentioned

The question was posed to me in an online interview.

This key question is from Least Squares Design Methods topic in division Digital Filters Design of Digital Signal Processing

Answer 1

The correct answer is (a) {bk}

To elaborate: The parameters {bk} are selected to determine the zeros of the filter that can be obtained where h(n)=hd(n).