Question

试用MATLAB 的向量表示法,绘出下列离散序列的时域波形.

Answer 1

close all;

x = -10 :0.01 :10;

n = length(x);

f1 = zeros(n,1);

f2 = zeros(n,1);

f1((n-1)/20*10) = 1;

f1((n-1)/20*7+1) = 1;

figure,plot(x,f1),axis([-10 10 -0.2 1.2]);

f2((n-1)/20*10 :(n-1)/20*16+1) = ones(size((n-1)/20*10 :(n-1)/20*16+1));

figure,plot(x,f2),axis([-10 10 -0.2 1.2]);