InterviewSolution
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InterviewSolution
| 1. |
A sequence () with the transform X() = + - 2 + 2 - 3 - 4 is applied as an input to a linear, time invariant system with the impulse response () = 2δ( - 3) where The output at = 4 is |
| Answer» Y(Z) = X(Z) x H(Z) = 2 x (Z4 + Z2 - 2Z + 2) x Z-3 Y(n) = 2[δ(n + 1) - δ(n - 1) - 2(n - 2) + 2δ(n - 3) - 3δ(n - 7)] at n = 4, Y(4) = 0. | |