Which of the following pairs of M and N will give a perfect match?
A. 3,6
B. 3,4
C. 3,5
D. 4,5
Answer:A
Which of the following pairs of M and N will give a perfect match?
A. 3,6 B. 3,4 C. 3,5 D. 4,5
Explanation: When M is increased from three to four, we obtain a perfect match with the desired Butterworth filter not only for N=4 but for N=5, and in fact, for larger values of N.