CAUVERY COLLEGE OF ENGINEERING & TECHPERUR-TRICHY 639 103

MODEL EXAMEC6502 PRINCIPLES OF DIGITAL SIGNAL PROCESSING Year: III SEMESTER: VBranch:ECE MAX. Marks:100 PART –A (2*10=20)1. State the advantages of FFT over DFTs.

2.What is mean by bit reversal?

3. Why do we go for analog approximation to design a

digital filter?

4. Give any two properties of chebyshev filters.

5. State the properties of FIR filters.

6. What is mean by Frequency sampling Techniques?

7. What is mean by fixed point arithmetic? Give example.

8. Explain the meaning of limit cycle oscillator.

9. State the various applications of DSP.

10. Application of adaptive filters?

PART B (5 *16 = 80 Marks)11(a)With appropriate diagrams describe (i)overlap-save

method,(ii)overlap-add method. 16M

OR

(b) .Given x(n) = {0,1,2,3,4,5,6,7} find X(k) using DIT FFT

algorithm & Draw the Structure 16M

12(a)Explain in detail Butterworth filter approximation And

give an Examples 16M

OR

(b)Explain the bilinear transform method of IIR filter design.

What is warping effect? Give an Example for that.16M

13(a) Derive the condition of FIR filter to be linear in phase.

16M

OR

(b)Explain the designing of FIR filters using windows. 16M

14(a)Explain the quantization process and errors introduced

due to quantisation. 16M

OR

(b)(i)Explain how reduction of product round-off error is achieved in digital filters. 8M

(ii)Explain the effects of coefficient quantisation in FIR filters. 8M

15(a)(i)Explain how various sound effects can be generated with the help of DSP. 8M(ii)State the applications of multirate signal processing. 8M

OR(b)(i)Explain how DSP can be used for speech processing. 8M(ii)Explain in detail about decimation and interpolation. 8M