中文说明：
能够对一段数据进行med处理，对一段信号降噪进行降噪处理，减少噪声对信号的影响，使信号在之后的处理中其故障特征频率能更好地表现出来。
English Description：
It can process a section of data by MED and denoise a section of signal to reduce the influence of noise on the signal, so that the fault characteristic frequency of the signal can be better displayed in the later processing.