信号与系统与maltab求用matlab画出矩形信号 x(t)=u(t)-u(t-2)

wewwqqee

如题
求用matlab画出矩形信号  x(t)=u(t)-u(t-2)
/ \& |- G1 G, P8 `9 R

wushy32

这个貌似很简单吧。。。

ononsiiii532

单位阶越：
function [x,n] = stepseq(n0,n1,n2)
% Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
% ------------------------------------------
- m/ A" h. p. h: |% [x,n] = stepseq(n0,n1,n2)
%
if ((n0 < n1) | (n0 > n2) | (n1 > n2))
0 A/ l: x) @* @% \8 L- R* J  B        error('arguments must satisfy n1 <= n0 <= n2')
end
" ^* _) n1 V+ U5 T- B1 I% l. \n = [n1:n2];
%x = [zeros(1,(n0-n1)), ones(1,(n2-n0+1))];
9 ^. E. F' e2 q# tx = [(n-n0) >= 0];