DSP 4ed [Proakis-Manolakis] 数字信号处理-Chapter 7.pdf

Chapter 7 7.1 Since x(n) is real, the real part of the DFT is even, imaginary part odd. Thus, the remaining points are {0.125 + j 0.0518, 0, 0.125 + j 0.3018} 7.2 (a) x˜ (l) = x (l), 0 ≤ l ≤ N − 1 2 2