Questions on Digital Signal Processing

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24 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

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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. W
hat 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 & Multidimens
ional 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 im
pulse & 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.W
hat

are the properties of systems ?

Explain with suitable example?


18.What is the condition for s
tability?


19.What is LSI system
.

20.What

are the steps required to perf
o
rm linear convolution?

2 I.

What are the properties of linear convolution?


22.Why difference equation is needed?

23.What are the types of discrete
mathe
matical expressions?

24.
How discr
ete time systems are classitied ?
Why ?


25.Important terms related to difference equation?

26.
W
hat are the steps for ADC?

27.What is sampling theorem?

2
8.
If F
s > 2W

, F
s=2W,

F
s.
<
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 a
re 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


exponen
tial


7

What ar
e the properties of z
-
tr
ansform

?

Mathematical formula ?

8.
What is the condition for causal
ity & st
ability in terms of z
-
transform ?

9 Compa
re z
-
transf
o
rm 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 cycli
c/Periodic property of twiddle factor ?

9.

What are the properties of DFT ?

10.

Wh
at is circular convolution

?

11.

Compare linear convolution
with circuiar convolution

?

12 W
hy result of linear
convolution &

circular convolution is not same ?

How to obtain



same

result ?




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

?


14
What is overlap sav
e &

overlap add method ?



15 What

is FFT algorithm ?


16 What do you understand by Radix
-
2 FFT alg
orithm ?


17
What are decimation i
n 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 Filter

2

What is
the relationship between s
-
plane and z
-
pl
ane

3


Mapping between s & z

plane?

4


Why BZT ? What is is frequency
w
a
r
ping ?
Advantages of BZT
.

5

Compare impulse with BZT ?

6

What are the design techniques for Digital filters?

7

Design formulas & filter conversi
on?

8

W
hat is FIR filter design using w
indows ? Types of Windows advantages &
disadvantages?

9

What are the specifications nee
ded for design of any type of Filter ?


Questions on Hardware

1

What are the advantages
o
f designing
DSPs processors over other
Microprocessors ?

2

Draw
& explain block diagram o
f
di
gital processing?

3

What
are the different types of pro
cessors used in DSP
.

4

What a
re the types of architectures ?

5

What is internal architecture

ot A
D
SP 2IXX family contains

? Draw

6

What are the addressing m
odes

of

ADS
P 21XX Family?

7

What are universal registers , computational unit registers , I/O processor register

8

What are the Data Types

?

9

What is ALU ? W
hat
are its features.

10

What are
the features of Multiplier
-

Acc
um
ulator (MAC) ?

11

What is barrel shifter ?
W
hat are its features

?

12

What are the features of ADSP
-
21
XX family of processor?