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
3 ~$ C& [( A! j3 W求用matlab画出矩形信号  x(t)=u(t)-u(t-2)
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ononsiiii532

单位阶越：
function [x,n] = stepseq(n0,n1,n2)
% Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
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6 M/ U4 f8 d2 M& o5 }9 m% [x,n] = stepseq(n0,n1,n2)
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$ Y2 f+ E" C' cif ((n0 < n1) | (n0 > n2) | (n1 > n2))
' u) m1 W) M& t1 O8 f% j        error('arguments must satisfy n1 <= n0 <= n2')
$ L- o+ d1 C% Z) E4 Oend
/ [( Z( ^1 Q- |1 P, d- z1 cn = [n1:n2];
%x = [zeros(1,(n0-n1)), ones(1,(n2-n0+1))];
* m0 O; q* o) A! g% sx = [(n-n0) >= 0];

wushy32

这个貌似很简单吧。。。