Question

What is the number of maxima present in the pass band of magnitude frequency response of a low pass chebyshev-I filter of order 5?

(a) 1

(b) 2

(c) 3

(d) 4

I had been asked this question during a job interview.

My question comes from Chebyshev Filters topic in section Digital Filters Design of Digital Signal Processing

Answer 1

Right option is (c) 3

Explanation: In the magnitude frequency response of a low pass chebyshev-I filter, the pass band has 3 maxima and 2 minima(order 5=3 maxima+2 minima).