4.m

来自「已知一个LTI系统的差分方程为： y[n]-1.143*y[n-1]+0.4」· M 代码 · 共 9 行

N=11;
n=0:N-1
x=[n>=0]
x3=cos((7*pi/10)*n)
b=[0.0675,0.1349,0.0675];a=[1,-1.143,0.4128];
%x=ones(1,N);
zi=filtic(b,a,[1,2]);
y=filter(b,a,x3,zi)
stem(n,y)