Which of the following filters cannot be designed using impulse invariance method?
A. Low pass
B. Band pass
C. Low and band pass
D. High pass
Answer:A
Which of the following filters cannot be designed using impulse invariance method?
A. Low pass B. Band pass C. Low and band pass D. High pass
Explanation: It is clear that the impulse invariance method is in -appropriate for designing high pass filter due to the spectrum aliasing that results from the sampling process.