%  ex_11_07_1.m :  習(xí)題 11.7

clear all;
close all;
load test x;
M=32;lag=-32:1:32
m_r=xcorr(x,M,'biased');
m_real=real(m_r);
m_imag=imag(m_r);
figure('color','w');
subplot(211)
plot(lag,m_real);grid on;

subplot(212)
plot(lag,m_imag);grid on;
%title('imag');