S 10.1 Basic Sample Rate Alteration Devices Time-Domain Characterization 内-2n 0,otherwise y[n]=x[nM] (10.2) u↓M yln]=x[nM]§10.1 Basic Sample Rate Alteration Devices       = ± ± = otherwise x n L n L L xu n 0, [ / ], 0, , 2 ,... [ ] (10.1) y[n] = x[nM ] (10.2) Time-Domain Characterization L xu x[n] [n]=x[n/L] M x[n] y[n]=x[nM]