digital signal processing multiple choice questions and answers
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Free download in PDF Digital Signal Processing Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
What is the condition of M, if the structure according to the direct form is as follows?
[A]
M even
[B]
M odd
[C]
All values of M
[D]
Doesn’t depend on value of M
Answer: M odd
(2)
By combining two pairs of poles to form a fourth order filter section, by what factor we have reduced the number of multiplications?
[A]
25%
[B]
30%
[C]
40%
[D]
50%
Answer: 50%
(3)
The realization of FIR filter by frequency sampling realization can be viewed as cascade of how many filters?
[A]
Two
[B]
Three
[C]
Four
[D]
None of the mentioned
Answer: Two
(4)
The zeros of the system function of comb filter are located at ______________
[A]
Inside unit circle
[B]
On unit circle
[C]
Outside unit circle
[D]
None of the mentioned
Answer: On unit circle
(5)
Where does the poles of the system function of the second filter locate?
[A]
ej2π(k+α)M
[B]
ej2π(k+α)/M
[C]
ej2π(k-α)/M
[D]
ejπ(k+α)/M
Answer: ej2π(k+α)/M
(6)
When the desired frequency response characteristic of the FIR filter is narrowband, most of the gain parameters {H(k+α)} are zero.
[A]
True
[B]
False
Answer: True
(7)
Which of the following filters have a cascade realization as shown below?
[A]
IIR filter
[B]
Comb filter
[C]
High pass filter
[D]
FIR filter
Answer: FIR filter
(8)
Which of the following is the application of lattice filter?
[A]
Digital speech processing
[B]
Adaptive filter
[C]
Electroencephalogram
[D]
All of the mentioned
Answer: All of the mentioned
(9)
What is the unit sample response of the mth filter?
[A]
hm(0)=0 and hm(k)=αm(k), k=1,2…m
[B]
hm(k)=αm(k), k=0,1,2…m(αm(0)≠1)
[C]
hm(0)=1 and hm(k)=αm(k), k=1,2…m
[D]
none of the mentioned
Answer: hm(0)=1 and hm(k)=αm(k), k=1,2…m
(10)
The FIR filter whose direct form structure is as shown below is a prediction error filter.