Punjab Engineering College 2005 B.Tech Digital Signal Processing - Question Paper

B.Tech sixth & seventh Semester,2122
DIGITAL SIGNAL PROCESSING
NOTE:- This paper consist of 3 parts. part A is compulsory. Do any 4 ques. from
part B and any 2 ques. from part C

Section-A Marks : 10 * 2= 20

1(a) What is the difference ranging from Vol-Neumann and Harvard Architeture?
(b) FIR filter has linear phase response. elaborate its implications?
(c) Why is it necessary to describe ROC with every z-transform?
(d) elaborate basic elements of Digital Signal Processing?
(e) List the major applications of Digital Signal Processing.
(f) Compare the performance of FIR anmd IIR filters.
(g) What is Gibb's phenomenon ?
(h) Distinguish ranging from decimation in time and decimation in frequency FFT algorithms.
(i) Determine the z-transform of the subsequent signal and sketch the pole-zero trend :
x(n) = (-1)n.(2)-n.u(n).
(j) Determine the region of convergence of 2 sided infinte duration signals.

Section-B Marks:5 every

2. Determine the z-transform and ROC of the signal:
x(n) = [3{2n)-4(3n)] u(n).
3. Why is it stated that limit cycle issue does not exist in FIR digital filters realizations ?
4. elaborate the advantages of digital signal over analog signal processing ? Are there any limitations ?
5. What is bilinear transformation ? What is the relation ranging from digital frequency and analog frequency ? Is this linear?
6. Show that for LtI discrete-time system to stable, all the poles should lie within the unit circle.

Section-C Marks : 10 every

7. elaborate the different methods used for the design of FIR filters? explain window method in detail.
8. (a) elaborate the steps involved in the design of IIR filters ? explain impulse invariant method.
(b) discuss how the DFT can be used to calculate N equispaced samples of the z-transform of an N-point on
a circle of radius r.
9. Write short notes on any tow of the following:
(a) Properties of DFT
(b) Architecture of Digital Signal Processing
(c)Structure for the realization of discrete time systems.

Earning:   Approval pending.