a:[1,2,3,4,5] - 被卷积数组
b:[6,7,8] -卷积和数组
c = a (x)b[6 19 40 61 82 67 40] - full
[19 40 61 82 67] -same 去掉首尾
[40 61 82] - valid 不用补零
6 19 40 61 82 67 40
0 0 1 2 3 4 5 0 0
8 7 6
8 7 6
8 7 6
8 7 6
8 7 6
8 7 6
8 7 6
numpy.convolve(a,b,'full'/'same'/'valid')