?? untitled2.m
字號:
>> n=0:20;
>> h=0.8.^n;
>> x=ones(1,5);
>> y=conv(h,x);
>> stem(y)
y =
Columns 1 through 6
1.0000 1.8000 2.4400 2.9520 3.3616 2.6893
Columns 7 through 12
2.1514 1.7211 1.3769 1.1015 0.8812 0.7050
Columns 13 through 18
0.5640 0.4512 0.3609 0.2888 0.2310 0.1848
Columns 19 through 24
0.1478 0.1183 0.0946 0.0665 0.0440 0.0259
Column 25
0.0115
>> title('the second 卷積');
>> xlabel('n');
>> ylabel('y');
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