Digital Signal processing anna university QUestion paper

Dsp previous year model question paper -anna university.Digital signal processing important question.common to cse,ece,eee.

16 marks

1.  (i) Discuss the properties of DFT.    (10)
(ii) State and prove the circular convolution property of DFT. (6)
2.  (i) Compute DFT of following sequence    (6)
    (1) x(n) = {1, 0, -1, 0}
    (2) x(n) = {j, 0, j, 1}
    (ii) Using DFT and IDFT method, perform circular convolution of the sequence              x(n) = {1, 2, 2, 1} and h(n) = {1, 2, 3}. (10)

3. Find DFT of the sequence x(n) = { 1, 1, 1, 1, 1, 1, 0, 0} using radix -2 DIF – FFT algorithm.    (16)

4. Compute the eight point DFT of the given sequence x(n) = { ½, ½, ½, ½, 0, 0, 0, 0} using radix – 2 DIT - DFT algorithm.     (16)  


UNIT 5

1. Write short notes on (a) Image enhancement (b) Speech Processing (c) Musical sound processing and (d) vocoder. (16)
2. What is adaptive filter? With neat block diagram discuss any four applications of adaptive filter. (16)



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