dm07404.m

the code of the book come form the book of marlix laboratory with the book of singal

%dm07404
%绘制离散序列反褶信号波形
x1=[0,1,2,3,4,4,4,4];
n1=-4:3;
stem(n1,x1,'filled');
axis([-5,4,-0.5,4.5])
title('x(n)')
xlabel('n')
set(gcf,'color','w')
pause
[x,n]=xlfz(x1,n1)                 %绘制反褶序列波形
title('x(-n)')
xlabel('n')