MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Signal Processing knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why is it desirable to optimize frequency response in the transition band of the filter? |
| A. | Increase side lobe |
| B. | Reduce side lobe |
| C. | Increase main lobe |
| D. | None of the mentioned |
| Answer» C. Increase main lobe | |
| 2. |
What is the equation for the frequency k in the frequency response of an FIR filter? |
| A. | ( frac{ }{M} )(k+ ) |
| B. | ( frac{4 }{M} )(k+ ) |
| C. | ( frac{8 }{M} )(k+ ) |
| D. | ( frac{2 }{M} )(k+ ) |
| Answer» E. | |
| 3. |
In the frequency sampling method for FIR filter design, we specify the desired frequency response Hd( ) at a set of equally spaced frequencies. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
In a practical implementation of the frequency sampling realization, quantization effects preclude a perfect cancellation of the poles and zeros. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following is introduced in the frequency sampling realization of the FIR filter? |
| A. | Poles are more in number on unit circle |
| B. | Zeros are more in number on the unit circle |
| C. | Poles and zeros at equally spaced points on the unit circle |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
The major advantage of designing linear phase FIR filter using frequency sampling method lies in the efficient frequency sampling structure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The linear equations for determining {h(n)} from {H(k+ )} are not simplified. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following is equal to the value of H(k+ )? |
| A. | H*(M-k+ ) |
| B. | H*(M+k+ ) |
| C. | H*(M+k- ) |
| D. | H*(M-k- ) |
| Answer» E. | |
| 9. |
Which of the following is the correct expression for h(n) in terms of H(k+ )? |
| A. | ( frac{1}{M} sum_{k=0}^{M-1}H(k+ )e^{j2 (k+ )n/M} ); n=0,1,2 M-1 |
| B. | ( sum_{k=0}^{M-1}H(k+ )e^{j2 (k+ )n/M} ); n=0,1,2 M-1 |
| C. | ( frac{1}{M} sum_{k=0}^{M+1}H(k+ )e^{j2 (k+ )n/M} ); n=0,1,2 M+1 |
| D. | ( sum_{k=0}^{M+1}H(k+ )e^{j2 (k+ )n/M} ); n=0,1,2 M+1 |
| Answer» B. ( sum_{k=0}^{M-1}H(k+ )e^{j2 (k+ )n/M} ); n=0,1,2 M-1 | |
| 10. |
What is the relation between H(k+ ) and h(n)? |
| A. | H(k+ )= ( sum_{n=0}^{M+1} h(n)e^{-j2 (k+ )n/M} ); k=0,1,2 M+1 |
| B. | H(k+ )= ( sum_{n=0}^{M-1} h(n)e^{-j2 (k+ )n/M} ); k=0,1,2 M-1 |
| C. | H(k+ )= ( sum_{n=0}^M h(n)e^{-j2 (k+ )n/M} ); k=0,1,2 M |
| D. | None of the mentioned |
| Answer» C. H(k+ )= ( sum_{n=0}^M h(n)e^{-j2 (k+ )n/M} ); k=0,1,2 M | |
| 11. |
What is the frequency response of a system with input h(n) and window length of M? |
| A. | ( sum_{n=0}^{M-1} h(n)e^{j n} ) |
| B. | ( sum_{n=0}^{M} h(n)e^{j n} ) |
| C. | ( sum_{n=0}^M h(n)e^{-j n} ) |
| D. | ( sum_{n=0}^{M-1} h(n)e^{-j n} ) |
| Answer» E. | |
| 12. |
To reduce side lobes, in which region of the filter the frequency specifications have to be optimized? |
| A. | Stop band |
| B. | Pass band |
| C. | Transition band |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 13. |
In the frequency sampling method for FIR filter design, we specify the desired frequency response Hd( ) at a set of equally spaced frequencies. |
| A. | True |
| B. | False |
| Answer» B. False | |