Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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Questions
1 What is the condition of M, if the structure according to the direct form is as follows?

Digital Image Processing

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%
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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?

Digital Signal Processing

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.

Digital Signal Processing

A True
B False

Answer:True

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