How do you implement a fourth order Butterworth LP filter
at 1kHz if sampling frequency is 8 kHz?
Answer / mani_drvsv
A fourth order Butterworth filter can be made as cascade of
two seond order LP filters with zeta of 0.924 and 0.383.
One can use a bilinear transformation approach for
realising second order LP filters. Using this technique
described well in many texts, one can make two second order
LP filters and cascade them.
Is This Answer Correct ? | 16 Yes | 1 No |
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How do you implement a fourth order Butterworth LP filter at 1kHz if sampling frequency is 8 kHz?