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MU Electronics Engineering (Semester 6)
Digital Signal Processing & Processors
May 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) State and explain relation between DTFS, DFT and ZT.
4 M
1 (b) Explain the term linear phase & state its importance in digital filters.
4 M
1 (c) What is need of DSP processor went high school processor are available?
4 M
1 (d) What is meant by limit cycle in IIR system. Give example.
4 M
1 (e) Explain different signal processing operations involved in sub-band coding.
4 M

2 (a) Design 6th order linear phase LPF with cut of frequency π/2 using Blackman window function.
10 M
2 (b) Explain Gibbs's phenomenon. State it's significance in FIR filter design.
10 M

3 (a) Given H(S)=1(s+1)(s+2),T=2 seconds Design digital IIR filter using BLT method. Explain Frequency warping in BLT.
10 M
3 (b) A digital system is characterized by difference Equation, y(n)=0.9 y(n+1)+x(n) Explain the limit cycles generated in the output & determine the dead band of system when input x(n)=0 and y(-1)=12
10 M

4 (a) Compute DFT of sequence x(n)cos(nπ2),N=4 using DIF-FFT algorithm.
5 M
4 (b) Find IDFT of x(k)={3,(2+j),1,(2-j)}
5 M
4 (c) Find DTFS of x(n)={0, 1, 2, 3} with period N=4, State time shifting property of DTFS.
10 M

5 (a) Explain how higher throughout is obtained in DSP using VLIW architecture.
10 M
5 (b) In a recursive system defined by Transfer function H(z)=1(10.35z1(10.62z1 Assume that products are rounded to 4-bits including sing bit and the product range is -1 to 1. Find output round-off noise power in direct form realization.
10 M

6 (a) Explain different addressing modes of TMS320C67XX DSP processor.
10 M
6 (b) What are the salient features of TMS320C67XX family of DSP processor.
10 M



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