Digital Signal Processing Multiple Choice Questions and Answers

Questions

1 The absolute error between the desired response ω and the approximation H_r(ω) decreases as ω varies from 0 to 2πf_p.

A True

B False

View Answer

Answer:False

2 Which of the following is the important parameter in a differentiator?

A Length

B Bandwidth

C Peak relative error

D All of the mentioned

View Answer

Answer:All of the mentioned

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3 In this section, we confine our attention to FIR designs in which h(n)=h(M-1-n).

A True

B False

View Answer

Answer:False

4 What is the maximum value of f_p with which good designs are obtained for M odd?

A 0.25

B 0.45

C 0.5

D 0.75

View Answer

Answer:0.45

5 What kind of filter is an ideal Hilbert transformer?

A Low pass

B High pass

C Band pass

D All pass

View Answer

Answer:All pass

6 How much phase shift does an Hilbert transformer impart on the input?

A 45°

B 90°

C 135°

D 180°

View Answer

Answer:90°

7 In which of the following fields, Hilbert transformers are frequently used?

A Generation of SSB signals

B Radar signal processing

C Speech signal processing

D All of the mentioned

View Answer

Answer:All of the mentioned

8 The unit sample response of Hilbert transform is _______________

A Zero

B Symmetric

C Anti-symmetric

D None of the mentioned

View Answer

Answer:Anti-symmetric

9 Which of the following is true regarding the frequency response of Hilbert transform?

A Complex

B Purely imaginary

C Purely real

D Zero

View Answer

Answer:Purely imaginary

10 What is the value of unit sample response of an ideal Hilbert transform for ‘n’ even?

A -1

B 1

C 0

D None of the mentioned

View Answer

Answer:0

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