# Dr. A.P.J. Abdul Kalam University BE VI SEM (EX) Digital Signal Processing [EX-602] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Sixth Semester Examination, June-2021

Digital Signal Processing [EX-602]

Branch-EX

Time: 3:00 Hrs Max Marks 70

Note: 1. Attempt any five questions.

2. All question carry equal marks.

3. Answer should be precise & to be point only.

4. Assume suitable data if necessary & state them clearly.

Q.1 (a) What is sampling of discrete signals, explain?

(b) Write a short note on discrete time signals & system.

Q.2 (a) Write the properties of the discrete time Fourier transform (DTFT).

(b) Define DFT of a given time sequence x(n) and hence write five different

properties of DFT by giving suitable illustrations.

Q.3 (a) Describe one sided z-transform and its properties.

(b) Mention the properties of discrete Fourier series.

Q.4 (a) What do you understand by discrete Fourier transforms?

(b) What are the properties of DFT?

Q.5 (a) Describe fast Fourier transforms (FFT).

(b) Describe IIR digital filters.

Q.6 (a) What is Butterworth filter?

(b) Describe Chebyshev filter.

Q.7 (a) What do you understand by FIR DIGITAL FILTERS.

(b) Write a short note on Design of FIR Digital Filters using Window

Techniques.

Q.8 (a) Differentiate between IIR and FIR filters.

(b) Define and explain inverse FFT.

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