Anna University 5th Semester DSP Question Paper

Will you please provide the Question Paper of Anna University 5th Semester DSP exam ?

[Arun Vats]

Here is the list of few questions of Anna University 5th Semester DSP Question Paper which you are looking for .

PART A —
1. Define sampling theorem.
2. What is known as Aliasing?
3. What is meant by ROC?
4. Obtain the Discrete Fourier series coefficients of wn n x cos ) ( .
5. What is the relation between DFT and Z transform?
6. Draw the butterfly diagram for DITFFT.
7. What are the special features of FIR filters?
8. What is meant by prewarping?
9. Mention the features of DSP processor.
10. What is the condition for linear phase in FIR filters?

PART B —

11. (a) (i) Check whether the following is linear, time invariant, casual and
stable ) 1 ( ) ( ) ( n nx n x n y . (8)
(ii) Check whether the following are energy or power signals.
(1) ) (
2
1
) ( n u n x
n

(2) n jw Ae n x 0 ) ( . (8)
Or
(b) (i) Describe in detail the process of sampling and quantization.
Also determine the expression for quantization liner. (10)
(ii) Check whether the following are periodic
(1) ) 3 cos( ) ( n n x
(2) ) 3 sin( ) ( n n x . (6)
12. (a) (i) Determine the Z transform of
(1) 0 ( ) cos ( ) n x n a w n u n . (5)
(2) ) ( 3 ) ( n u n x n . (3)
(ii) Obtain ) (n x for the following :
2 1 52 . 0 52 . 1 1
1
) (
z X
for ROC : | | 1, | | 0.5 z z , 1 | | 5 . 0 z . (8)
Or
(b) (i) Determine the linear convolution of the following sequences
} 1 , 3 , 2 , 1 { ) ( 1
n x
↑
−} 1 , 1 , 2 , 1 { ) ( 2 n x . (6)
(ii) Obtain the system function and impulse response of the
following system ) 1 ( ) ( ) 1 ( 5 ) ( −−−n x n x n y n y . (10)

13. (a) (i) Explain the following properties of DFT.
(1) Convolution.
(2) Time shifting
(3) Conjugate Symmetry. (10)
(ii) Compute the 4 point DFT of } 3 , 2 , 1 , 0 { ) ( n x . (6)
Or
(b) (i) Explain the Radix 2 DIFFFT algorithm for 8 point DFT. (8)
(ii) Obtain the 8 point DFT using DITFFT algorithm for
↑
} 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 { ) (n x . (8)
14. (a) (i) Realize the following using cascade and parallel form .
2 1
2 1
2 . 0 1 . 0 1
6 . 0 6 . 3 3
) ( −−
−−
−


z z
z z
z H . (12)
(ii) Explain how an analog filter maps into a digital filter in Impulse
Invariant transformation. (4)
Or
(b) (i) Using Hanning window, design a filter with



≤≤
≤≤
−
−−
| |
4
0
4 4
) (
w
w e e Hd jzw jw
.
Assume 7 N . (12)
(ii) Write a note on need and choice on windows. (4)
15. (a) Explain in detail the architectural features of a DSP processor. (16)
Or
(b) Explain the addressing formats and functional modes of a DSP
processor.
(16)