The improved lms arithmetic can adaptive the minimum pulse response automatically by the guide line of minimum average square error and have the best filtering effect . the method is easy to practise and has been introduced extensively 采用经过改进的lms （最小均方误差）算法来实现自适应滤波器，它以均方误差最小为准则，能自动调节单位的最小脉冲响应，以达到最优滤波效果，这种方法简便易行，已经被广泛采用。
