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24-05-2024
Physics

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A digital filter is described by the animal equation
y(n) - 0,9y(n -1) = x(n)
The input signal is periodic and is given by x(n)= (-1)ⁿ= eʲπⁿ, ∀n
What frequencies are included in the input signal {x(n)} and the output signal {y(n)}?

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