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Which is all zero filter?(a) Butter worth filter(b)FIR(c) IIR(d)None of the above

Question

Which is all zero filter?

(a) Butter worth filter
(b) FIR
(c) IIR
(d) None of the above

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Solution

(b) FIR

The Finite Impulse Response (FIR) filter is an all-zero filter. This is because the FIR filter only has zeros and does not have any poles. In other words, the output of the FIR filter is a weighted sum of the input samples, and it does not depend on the previous output samples. This is in contrast to the Infinite Impulse Response (IIR) filter, which does have poles and zeros, and the output depends on the input as well as the previous output samples. The Butterworth filter is a type of IIR filter, so it is not an all-zero filter.

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