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1. |
If x(n) is a finite duration sequence of length L, then the discrete Fourier transform X(k) of x(n) is given as ____________ |
A. | ( sum_{n=0}^{N-1}x(n)e^{-j2 kn/N} )(L<N)(k=0,1,2 N-1) |
B. | ( sum_{n=0}^{N-1}x(n)e^{j2 kn/N} )(L<N)(k=0,1,2 N-1) |
C. | ( sum_{n=0}^{N-1}x(n)e^{j2 kn/N} )(L>N)(k=0,1,2 N-1) |
D. | ( sum_{n=0}^{N-1}x(n)e^{-j2 kn/N} )(L>N)(k=0,1,2 N-1) |
Answer» B. ( sum_{n=0}^{N-1}x(n)e^{j2 kn/N} )(L<N)(k=0,1,2 N-1) | |