Shivaji University 2010-5th Sem B.E T.E(Electrical)- , Digital Signal Processing(New) - exam paper
It is ques. paper for DSP for repeater students of 3rd year electrical.
illllllil N - 1049
Seat
No.
T.E. (.Eiecirical) (Semester - V) (New) Examination 2011) DIGITAL SIGNAL PROCESSING
Day m\d Date: F c \ d ay, 14-5 -2010 "1 b la I Marks ; 100
Time: 10.00 to ! -00 p.m.
Note : Attempt any three questions from each Section.
SECTION -1
1. a) Obtain the expression showing relation between the N-point DPT and
Z - trsnsfo.rm> $
b) Explain with reference to Frequency respor.se the effect of upsampling and downsampling. 8
2. a) Explain use of DFT in Linear filtering. #
b) Obtain ihe convolution usig overlap and add method, 8
If X (n) " [1, 1, 1, j7272,2;2] and h (n) ~ [ L 2, 3 j
3. a) Why Bit- Reversal algorithm is required ia.OIT FFT algorithm ? Explain ihc
advantage o f f FT' algorithm in calcination of D.FT. 8
b) Compute DPT of X (n) using DIT-FFT algorithm if 8
X (n) ~ [1, ? 1, 2, }, 2, i, 2].
4. a) Using DFT and 1DFT obtain circular convolution of.
.X {n} [ i, 2, ,?, 4j and
h (n) - [U 1,2,2] 10
b) Explain Nyquist rste and advantages of sampling rate conversion. &
5. a) Obtain the direct form structure -1,11 and cascade and parallel form
for H {%) given as
(Z-i- 2)
H (*) - Z2 gz + 15
b) Explain ' Windowing Iti HR filter and comment on Xaissr Window.
2
6. a) Design a digital niter using impulse Invariant method if H{s) - /"'Tfj'j"T:L
and sampling frequency is 5 Hz. b) Discuss advantages ofdigitl lierkigoveralog fiitcnrsg,
7. a) Design a second order Butter worth. Migh Pass .filter using BLT method If-
Cm off frequency is - 1 KHz Sampling frequency h - 10 KRz b) Hxpbin the Bus structure hi DS.P processon
ei) Explain designing of FIR lii-tar using frequency sampling method, b) Explain the arithmetic errors in digital fflters'-with example.
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