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**Anna University**

**Question Paper Code : 51404**

**B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014.**

**Fifth Semester**

**Electronics and Communication Engineering**

**EC 2302/EC 52 — DIGITAL SIGNAL PROCESSING**

**(Regulation .2008)**

**(Common to PTEC 2302 –Digital Signal Processing for B.E. (Part-Time) Fourth Sethester, Electronics and Communication Engineering – Regulation 2009)**

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**PART A (10 X 2 = 20 marks**

1. State the difference•between DFT and DTFT.

2. What is Bit Reversal?

3. Sketch the frequency response of an odd and an even order Chebyshev low pass filters.

4. What is bilinear transformation?

5. What is the main. advantages and disadvantages of this technique? State the effect of having abrupt discontinuity in frequency response of FIR

filters.

6. State Gibb's phenomenon

7. State the need for "scaling in filter implementation.

8. What is product round-off noise?

9. Write the need for. decimation.

10. What is meant by multirate signal processing?

**PART B 7- (5.x 16 = 80 marks)**

11. (a) Explain in detail about overlap add method and overlap save method for filtering of long data sequences using DFT. _ (16) Or

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