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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. | \(\sum_{n=0}^{N-1}x(n)e^{-j2πkn/N}\)(L<N)(k=0,1,2…N-1) |
B. | \(\sum_{n=0}^{N-1}x(n)e^{j2πkn/N}\)(L<N)(k=0,1,2…N-1) |
C. | \(\sum_{n=0}^{N-1}x(n)e^{j2πkn/N}\)(L>N)(k=0,1,2…N-1) |
D. | \(\sum_{n=0}^{N-1}x(n)e^{-j2πkn/N}\)(L>N)(k=0,1,2…N-1) |
Answer» B. \(\sum_{n=0}^{N-1}x(n)e^{j2πkn/N}\)(L<N)(k=0,1,2…N-1) | |