此程序可以对振动加速度信号进行降噪处理，对主轴振动信号处理很有用。-This procedure can be performed on the vibration acceleration signal noise reduction processing on the spindle vibration signal processing is useful.

四阶格型滤波器，较二阶，三阶误差更小，收敛速度变快，50次即可迭代完成，在降噪方面有显著效果。(Four order lattice filter, compared with the two order, three order error is smaller, faster convergence speed, 50 iterations can be completed, in terms of noise reduction has a significant effect.)