c106.m

matlab例程MATLAB 6.x版的内建数据类型（Built-in data type）就有5种以上

f=[3 2 3 1 0 1 0 1 1];
h=[2 2];
L=length(f)+length(h)-1;
k=0:1:L-2;
y=fftfilt(h,f,3);
stem(k,real(y));