The method is that, first the input serial pass a designed filter, then reverse the filtered signal and pass the filter again, at last, reverse the second filtered signal.

其方法为：先将输入序列按顺序滤波，然后将所得结果逆转后反向通过滤波器，再将所得结果逆转后输出。

youdao

The method is that, first the input serial pass a designed filter, then reverse the filtered signal and pass the filter again, at last, reverse the second filtered signal.

其方法为：先将输入序列按顺序滤波，然后将所得结果逆转后反向通过滤波器，再将所得结果逆转后输出。

youdao