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
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What are types of digital filters ? Why realization ?
What are advantages & disadvantages if digital filter.
What are basic structures of FIR & IIR filters ?
Differentiate FIR & IIR filter.
Questions on Design of Filter
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What are the methods to design FIR & IIR Filter
What is the relationship between s-plane and z-plane
Mapping between s & z plane?
Why BZT ? What is is frequency warping ? Advantages of BZT.
Compare impulse with BZT ?
What are the design techniques for Digital filters?
Design formulas & filter conversion?
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 Hardware
1 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 register
8 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?