用matlab绘出sin(pi*t)/(pi*t)弦波图

网友回答

matlab 有定义sinc(x)=sin(pi*t)/(pi*t);
clear;
dt=0.001;
Length=3;
t=-3:dt:Length;
xa=sinc(t);
plot(t,xa);
xlabel('time t (sec)'); ylabel('xa(t)');
title('signal xa(t)');