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Digital Signal Processing – Multiple Choice Questions (MCQs)

13. The phase response of a linear phase FIR filter is:
- A. Linear
- B. Non-linear
- C. Constant
- D. Zero
14. Which type of filter can achieve perfect linear phase?
- A. FIR
- B. IIR
- C. Both FIR and IIR
- D. Neither FIR nor IIR
15. The transfer function of a discrete-time LTI system is given by H(z). The frequency response is obtained by substituting z = :
- A. 0
- B. 1
- C. e^jω
- D. ∞
16. The convolution of two discrete-time sequences x[n] and h[n] is given by:
- A. Σ x[k]h[n-k]
- B. Σ x[k]h[k]
- C. Σ x[k] + h[n-k]
- D. Σ x[k] - h[n-k]
17. The convolution theorem states that convolution in time domain corresponds to ________ in the Z-domain.
- A. Addition
- B. Subtraction
- C. Multiplication
- D. Division
18. The process of increasing the sampling rate of a digital signal is called:
- A. Decimation
- B. Interpolation
- C. Quantization
- D. Aliasing
19. The process of decreasing the sampling rate of a digital signal is called:
- A. Decimation
- B. Interpolation
- C. Quantization
- D. Aliasing
20. Windowing functions are used in FIR filter design to:
- A. Reduce filter order
- B. Improve stopband attenuation
- C. Increase passband ripple
- D. Shift cut-off frequency
21. The bilinear transformation maps the entire jΩ-axis of the s-plane to the ________ in the z-plane.
- A. Unit circle
- B. Origin
- C. Infinity
- D. Real axis
22. Pre-warping is used in IIR filter design using bilinear transformation to compensate for:
- A. Aliasing
- B. Frequency distortion
- C. Quantization error
- D. Phase distortion
23. The order of an FIR filter is directly related to its:
- A. Memory
- B. Phase response
- C. Frequency response
- D. Computational complexity
24. Which of the following is a non-recursive filter structure?
- A. Direct form I
- B. Direct form II
- C. Cascade form
- D. Linear phase FIR filter

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Digital Signal Processing – Multiple Choice Questions (MCQs)

13. The phase response of a linear phase FIR filter is:

14. Which type of filter can achieve perfect linear phase?

15. The transfer function of a discrete-time LTI system is given by H(z). The frequency response is obtained by substituting z = :

16. The convolution of two discrete-time sequences x[n] and h[n] is given by:

17. The convolution theorem states that convolution in time domain corresponds to ________ in the Z-domain.

18. The process of increasing the sampling rate of a digital signal is called:

19. The process of decreasing the sampling rate of a digital signal is called:

20. Windowing functions are used in FIR filter design to:

21. The bilinear transformation maps the entire jΩ-axis of the s-plane to the ________ in the z-plane.

22. Pre-warping is used in IIR filter design using bilinear transformation to compensate for:

23. The order of an FIR filter is directly related to its:

24. Which of the following is a non-recursive filter structure?

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