Q425
A digital signal processing system is described by the expression: y(n) = 2x(n) + x(n - 1) + 2y(n - 1) The system is:
A.
A stable FIR filter
B.
A stable IIR filter
C.
An unstable FIR filter
D.
An unstable IIR filter
AnswerAnswer: Option D
Solution
Answer: Option D
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