sample.m

经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助

close all
x=-40:0.01:40;
y=sin(x+eps)./(x+eps);
%y=sinc(x);
subplot(211)
 plot(x,y)
 
 axis([-20,20,-0.4,1.2])
 grid on
%title('The sinc(x)')
title('The Sa(x)')
xlabel('x')