中文说明：用标准的遗传算法优化低通数字滤波器的参数，采用的方法是最小均方误差法，得到较为理想的滤波器的传递函数的系数。
English Description：
The standard genetic algorithm is used to optimize the parameters of low-pass digital filter. The minimum mean square error method is used to obtain the ideal coefficient of the transfer function of the filter.