In general, which of the following assures of no ringing in the output

1.	In general, which of the following assures of no ringing in the output?
A.	Gaussian Lowpass Filter
B.	Ideal Lowpass Filter
C.	Butterworth Lowpass Filter
D.	All of the mentioned
Answer» B. Ideal Lowpass Filter

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In general, which of the following assures of no ringing in the output?

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