Questions on Digital Signal Processing

1 What is DSP

2. What are advantages of DSP ?

3. List applications of DSP?

4. How signal are classified.

5. What are continuous & discrete signal? Give example

6. What are continuous valued & discrete valued signals ? Give example

7. What are periodic & non periodic signals ? Give example.

8. What are even & odd signals ? Give suitable example

9. What are Deterministic & random signals ? Give example.

10.What are Multichannel & Multidimensional signals ? Give suitable example.

11 What is the condition of periodicity ? Show x(n+N)=x(n)

12.Differentiate power signal & energy signal?

13.What are the standard test signals ? Represent with mathematical expressions

14. Relationship between impulse & unit step function ?

15 What are the basic operations on discrete time signals

16 What are the symbols used to represent Discrete time systems

17.What are the properties of systems ? Explain with suitable example?

18.What is the condition for stability?

19.What is LSI system .

20.What are the steps required to perform linear convolution?

2 I. What are the properties of linear convolution?

22.Why difference equation is needed?

23.What are the types of discrete mathematical expressions?

24. How discrete time systems are classitied ? Why ?

25.Important terms related to difference equation?

26.What are the steps for ADC?

27.What is sampling theorem?

28.If Fs > 2W , Fs=2W, Fs.< 2W , what is effect if W is Max frequency ?

29.What is aliasing effect or holdover error ? How to eliminate it ?

30.What is quantization. process ? Why is it required ?

31 .What is quantization error or noise

Questions on z transform

1 What is z-transform ? What are the types?

2 What are the advantages of z-transform ?

3 What is z domain ?

4 What is ROC ? Define ROC ? What is significance of ROC ? Give example

5 What will be ROC of causal finite duration sequence , anticausal finite duration sequence , and two sided finite duration sequence.

6 What is z-transform of unit impulse, unit step , unit Ramp , exponential & two sided exponential

7 What are the properties of z-transform ? Mathematical formula ?

8. What is the condition for causality & stability in terms of z-transform ?

9 Compare z-transform with DFT & Fourier transform ?

Questions on DTFT , DFT & FFT

1. What are the types of Fourier Transform ?

2. Write Fourier transforms of standard signals?

3. What are the properties of DTFT ?

4. What is DFT ? Definition of DFT ?

5. What is twiddle factor ?

6. What is the relationship between DTFT & DFT?

7. What are the DFTs of standard signals ?

8. What is cyclic/Periodic property of twiddle factor ?

9. What are the properties of DFT ?

10. What is circular convolution ?

11. Compare linear convolution with circuiar convolution ?

12 Why result of linear convolution & circular convolution is not same ? How to obtain same result ?

13 What is linear filtering ? What are the steps to calculate linear filtering ?

14 What is overlap save & overlap add method ?

15 What is FFT algorithm ?

16 What do you understand by Radix-2 FFT algorithm ?

17 What are decimation in time & decimation in frequency algorithm ?

Questions on Digital Filter

1 What are types of digital filters ? Why realization ?2 What are advantages & disadvantages if digital filter.3 What are basic structures of FIR & IIR filters ?4 Differentiate FIR & IIR filter.

Questions on Design of Filter

1 What are the methods to design FIR & IIR Filter2 What is the relationship between s-plane and z-plane3 Mapping between s & z plane? 4 Why BZT ? What is is frequency warping ? Advantages of BZT.5 Compare impulse with BZT ?6 What are the design techniques for Digital filters?7 Design formulas & filter conversion?8 What is FIR filter design using windows ? Types of Windows advantages &

disadvantages?9 What are the specifications needed for design of any type of Filter ?

Questions on Hardware1 What are the advantages of designing DSPs processors over other Microprocessors ?2 Draw & explain block diagram of digital processing?3 What are the different types of processors used in DSP.4 What are the types of architectures ?5 What is internal architecture ot ADSP 2IXX family contains ? Draw 6 What are the addressing modes of ADSP 21XX Family?7 What are universal registers , computational unit registers , I/O processor register8 What are the Data Types ?9 What is ALU ? What are its features.10 What are the features of Multiplier- Accumulator (MAC) ?11 What is barrel shifter ? What are its features ?12 What are the features of ADSP-21XX family of processor?