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10 July, 03:32

You are using an 8 th order low-pass filter. Determine the roll-off achievable in the stop band, in dB/dec, and determine the phase shift in the stop band, in degrees. What is the advantage of using this filter compared to a second order low-pass filter?

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  1. 10 July, 05:03
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    Answer: The complexity of filter is the order of the filter. Greater the order of the filter, more efficient the filter is. Roll of value of one filter is 20dB/dec. So the roll-off value of 8th order filter is 160dB/dec. 8th order filter is more efficient than the second order low-pass filter.
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