University IIR Filters Quiz Questions PDF

Digital IIR Filters Assessment **1. What is a key advantage of IIR filters compared to FIR filters?**\ a. Linear phase response\ b. Better stability characteristics\ c. Higher efficiency with fewer coefficients\ d. Simpler implementation structure **2. In the bilinear transformation method, which...

Digital IIR Filters Assessment **1. What is a key advantage of IIR filters compared to FIR filters?**\ a. Linear phase response\ b. Better stability characteristics\ c. Higher efficiency with fewer coefficients\ d. Simpler implementation structure **2. In the bilinear transformation method, which problem needs to be addressed during the design process?**\ a. Aliasing effects\ b. Frequency warping\ c. Time domain distortion\ d. Phase discontinuity **3. Which structure of IIR filter realization typically requires the least number of memory elements?**\ a. Direct Form I\ b. Direct Form II\ c. Cascade Form\ d. Parallel Form **4. What is a characteristic of Butterworth filters?**\ a. Ripples in the passband\ b. Maximally flat magnitude response\ c. Sharp cutoff characteristics\ d. Variable group delay **5. Which IIR filter realization form is most sensitive to coefficient quantization?**\ a. Cascade Form\ b. Parallel Form\ c. Direct Form II\ d. Ladder Form **6. What is a primary disadvantage of using impulse invariance method?**\ a. High computational complexity\ b. Phase distortion\ c. Aliasing in frequency domain\ d. Poor stability preservation **7. In Chebyshev Type I filters, where do the ripples occur?**\ a. Stopband only\ b. Passband only\ c. Both passband and stopband\ d. Neither passband nor stopband **8. Which realization structure is most suitable for high-order IIR filters?**\ a. Direct Form I\ b. Cascade Form\ c. Direct Form II\ d. Parallel Form **9. What is preserved in the impulse invariance method of IIR filter design?**\ a. Frequency response\ b. Impulse response\ c. Step response\ d. Phase response **10. Which statement about ladder realization of IIR filters is correct?**\ a. It has poor noise performance\ b. It\'s the most complex to implement\ c. It has excellent sensitivity properties\ d. It requires more multipliers than direct form ANSWER KEY 1. c 2. b 3. b 4. b 5. c 6. c 7. b 8. b 9. b 10. c