Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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Questions
1 How is the frequency response of an ideal differentiator related to the frequency?
A Inversely proportional
B Linearly proportional
C Quadratic
D None of the mentioned

Answer:Linearly proportional
2 Which of the following is the frequency response of an ideal differentiator, Hd(ω)?
A -jω ; -π ≤ ω ≤ π
B -jω ; 0 ≤ ω ≤ π
C jω ; 0 ≤ ω ≤ π
D jω ; -π ≤ ω ≤ π

Answer:jω ; -π ≤ ω ≤ π
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3 The ideal differentiator ahs which of the following unit sample response?
A Symmetric
B Anti-symmetric
C Cannot be explained
D None of the mentioned

Answer:Anti-symmetric
4 If hd(n) is the unit sample response of an ideal differentiator, then what is the value of hd(0)?
A 1
B -1
C 0
D 0.5

Answer:0
5 In this section, we confine our attention to FIR designs in which h(n)=-h(M-1-n).
A True
B False

Answer:True
6 Which of the following is the condition that an differentiator should satisfy?
A Infinite response at zero frequency
B Finite response at zero frequency
C Negative response at zero frequency
D Zero response at zero frequency

Answer:Zero response at zero frequency
7 Full band differentiators can be achieved with an FIR filters having odd number of coefficients.
A True
B False

Answer:False
8 If fp is the bandwidth of the differentiator, then the desired frequency characteristic should be linear in the range of _____________
A 0 ≤ ω ≤ 2π
B 0 ≤ ω ≤ 2fp
C 0 ≤ ω ≤ 2πfp
D None of the mentioned

Answer:0 ≤ ω ≤ 2πfp
9 What is the desired response of the differentiator in the frequency range 2πfp ≤ ω ≤ π?
A Left unconstrained
B Constrained to be zero
C Left unconstrained or Constrained to be zero
D None of the mentioned

Answer:Left unconstrained or Constrained to be zero
10 What is the weighting function used in the design of FIR differentiators based on the chebyshev approximation criterion?
A 1/ω
B ω
C 1+ω
D 1-ω

Answer:1/ω

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