Question

In which of the following transformations, poles and zeros of H(s) are mapped directly into poles and zeros in the z-plane?

(a) Impulse invariance

(b) Bilinear transformation

(c) Approximation of derivatives

(d) Matched Z-transform

I got this question at a job interview.

I need to ask this question from Matched Z Transformation topic in division Digital Filters Design of Digital Signal Processing

Answer 1

The correct answer is (d) Matched Z-transform

For explanation: In this method of transforming analog filter into an equivalent digital filter is to map the poles and zeros of H(s) directly into poles and zeros in the z-plane.