• 2022-06-15
    已知有限长序列x[n]={1,2,3,4,5},n=0,1,2,3,4,其5点DFT是X[k],则【图片】的5点离散傅里叶反变换IDFT即y[n]是序列()
    A: y[n]={5,1,2,3,4},n=0,1,2,3,4
    B: x[n]={0,1,2,3,4},n=0,1,2,3,4
    C: y[n]={2,3,4,5,1},n=0,1,2,3,4
    D: y[n]={1,2,3,4,5},n=0,1,2,3,4