Question

Which of the following are cascaded in this method?

(a) Hd(z), H(z)

(b) 1/Hd(z), 1/H(z)

(c) 1/Hd(z), H(z)

(d) Hd(z), 1/H(z)

I have been asked this question in class test.

I need to ask this question from Least Squares Design Methods topic in division Digital Filters Design of Digital Signal Processing

Answer 1

Right answer is (d) Hd(z), 1/H(z)

Best explanation: In this method, we consider the cascade connection of the desired filter Hd(z) with the reciprocal, all zero filter 1/H(z).