Digital Signal Processing Multiple Choice Questions and Answers

Questions

1 What is the kind of relationship between Ω and ω?

A Many-to-one

B One-to-many

C One-to-one

D Many-to-many

Answer:One-to-one

2 If a_k is the filter coefficient and āk represents the quantized coefficient with Δa_k as the quantization error, then which of the following equation is true?

A āk = a_k.Δa_k

B āk = a_k/Δa_k

C āk = a_k + Δa_k

D None of the mentioned

View Answer

Answer:āk = a_k + Δa_k

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3 If p_k is the set of poles of H(z), then what is Δp_k that is the error resulting from the quantization of filter coefficients?

A Pre-turbation

B Perturbation

C Turbation

D None of the mentioned

View Answer

Answer:Perturbation

4 If the poles are tightly clustered as they are in a narrow band filter, the lengths of |pi-pl| are large for the poles in the vicinity of pi.

A True

B False

View Answer

Answer:False

5 Which of the following operation has to be done on the lengths of |pi-pl| in order to reduce the perturbation errors?

A Maximize

B Equalize

C Minimize

D None of the mentioned

View Answer

Answer:Maximize

6 The sensitivity analysis made on the poles of a system results on which of the following of the IIR filters?

A Poles

B Zeros

C Poles & Zeros

D None of the mentioned

View Answer

Answer:Zeros

7 The quantization inherent in the finite precision arithmetic operations render the system linear.

A True

B False

View Answer

Answer:False

8 In recursive systems, which of the following is caused because of the nonlinearities due to the finite-precision arithmetic operations?

A Periodic oscillations in the input

B Non-Periodic oscillations in the input

C Non-Periodic oscillations in the output

D Periodic oscillations in the output

View Answer

Answer:Periodic oscillations in the output

9 The oscillations in the output of the recursive system are called as ‘limit cycles’.

A True

B False

View Answer

Answer:True

10 Limit cycles in the recursive are directly attributable to which of the following?

A Round-off errors in multiplication

B Overflow errors in addition

C Both of the mentioned

D None of the mentioned

View Answer

Answer:Both of the mentioned

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