Question

The magnitude response of a normalised Butterworth low pass filter is

a.

linear starting with value of unity at zero frequency and 0.707 at cut off frequency

b.

non linear all through but with values of unity at zero frequency and 0.707 at cut off frequency

c.

linear upto cut off frequency and nonlinear thereafter

d.

nonlinear upto cut off frequency and linear thereafter

Answer: (a).linear starting with value of unity at zero frequency and 0.707 at cut off frequency

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Q. The magnitude response of a normalised Butterworth low pass filter is

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