even_odd_c.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

% Name: Even_Odd_c.m
clear,close all,
t=-3:0.01:3;
x=input('Type in the continuous-time siganl x(t)=');%(t+2).*(u(t+2)-u(t))-(t-2).*(u(t)-u(t-2));
xe=(x+fliplr(x))/2;%(t+4).*(u(t+4)-u(t+2))-t.*(u(t+2)-u(t))-t.*(u(t)-u(t-2))+(t-4).*(u(t-2)-u(t-4));
xo=(x-fliplr(x))/2;%(n+4).*(u(n+4)-u(n))-(n-4).*(u(n)-u(n-4));
subplot(311)
plot(t,x,'r')
title('The original signal x(t)')
xlabel('Time t')
grid on
subplot(312)
plot(t,xe,'r')
title('The even part')
xlabel('Time t')
grid on
subplot(313)
plot(t,xo,'r')
title('The odd part')
xlabel('Time t')
grid on