Anna University, Chennai Nov/Dec 2012 Examinations

Rejinpaul.com Important Questions

**EC2314 - Digital Signal Processing**

V Sem EEE

Unit I-V

1.
Explain in detail about analog to digital
conversion with suitable block diagram and explain

the sampling theorem

2.
Describe in detail the process of sampling and
quantization. Also determine the expression for Quantization step

3. Check for the
following systems are linear, causal, time invariant, stable, static

(i)
y(n)
= sin(x(n))

(ii)
Y
(n)= x(n)+n x(n+1)

(iii)
y(n)
= x(n) cos(x(n))

(iv)
y(n)
= x(n) + nx(n+2)

4. Check whether the
following are energy or power signals

X( n) =(1/2)

^{n}u(n)
X (n) =A e

^{jωon}
5. Explain the
properties of Z- Transform

6. Find the impulse
response(see Problems)

7. Test the stability
of given systems(see Problems)

8. Find the convolution(see
problems)

9. Determine DFT of the
sequence(see problems)

10. From the first
principles obtain the signal flow graph for computing 8-point DFT using radix2 Decimation
in frequency FFT algorithm

11. Determine the
response of LTI system when the input
sequence

x(n)={-1,1,2,1,-1} using radix2 DIF FFT. The impulse response is
h (n) = {-1, 1,-1, 1}

12. Realize the
following using cascade and parallel forms

H (z) =

__3+3.6Z__^{-1}+0.6Z^{-2}
1+0.1Z

^{-1-}0.2Z^{-2}^{13. }Using Hanning window, design a filter(see problem)

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^{14. }Using Rectangular window, design a filter(see problem)

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^{15. }Discuss in detail about invariant method and Bilinear Transformation method

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^{16. }Explain in detail the architectural features of a DSP Processor TMS320C54

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^{17. }With a neat diagram explain Von- Neumann architecture.

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^{18. }Explain the addressing formats and functional units of a DSP processor

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