Discussion :: Exam Questions Paper
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An antisymmetric filter having odd number of coefficient may have a performance as
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Answer : Option D
Explanation :
Consider an anti-symmetric filter response with order 5.
h(n) = [h(2), h(1), h(0), - h(1), - h(2)]
We know, H(0) = addition of all component values.
Hence H(0) = h(0)
Similarly H(p) = addition of all component values with alternate negative sign.
= h(2) - h(1) + h(0) + h(1) - h(2) = h(0)
Hence we get all pass filter.
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