exa1_21.m

新版Matlab 7辅助信号处理技术与应用

% exa 1-21_delay.m for example 1-21
% signal delay

clear all;
N=32;
w=100;
k=3;
x1=zeros(1,k);
xn=0:N-1;
x2=sin(100*xn);
figure(1)
stem(xn,x2)
x=[x1 x2];
axis([-1 N 1.1 1.1])
N=N+k;
xn=0:N-1;
figure(2)
stem(xn,x)
axis([-1 N 1.1 1.1])