p31_15.m

eda实例DSP上机程序

%%%%%%%%%%%%%%%%%% 数字信号处理第一章习题P31第15小题程序%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
clc
clear
xn=[1,2,3,4,2,1,zeros(1,10)];
B=[1,0,2];
A=[1,0.5];
yn=filter(B,A,xn);
n=0:length(yn)-1;
subplot(1,1,1),stem(n,yn,'o');axis([1,15,-2,8]);
title('系统的零状态响应');
xlabel('n');
ylabel('y(n)');