MCQOPTIONS
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| 1. |
{ x(n) } is a real-valued periodic sequence with a period N. x(n) and X(k) form N-point. Discrete Fourier Transform (DFT) pairs. The DFT Y(k) of the sequence. y(n) = x(r) X (n + r) is |
| A. | |X(k)|2 |
| B. | X(r) X(k + r) |
| C. | 1 |
| D. | 0 |
| Answer» B. X(r) X(k + r) | |