1.连续时间信号的取样及取样定理 s(t)=sin(2rfot s(t)@fs f=1 Hz, fs=3 -S,(t)=sin (&Ifot) S2(t)=sin(14nfot 采样失真 数字化?1.连续时间信号的取样及取样定理 __ s(t) = sin(2f0t) -1.2 - 1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 t s(t) @ fS f0 = 1 Hz, fS = 3 Hz -1.2 - 1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 t __ s1 (t) = sin(8f0t) -1.2 - 1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 t __ s2 (t) = sin(14f0t) -1.2 - 1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 t 采样失真 数字化？