说明：  该文件是在Labview环境下编写的数字滤波器，该滤波器可以针对不同的波形滤去不必要的高频或者低频，留下研究者想要的部分。
(The document is written in Labview environment digital filter that can filter out unwanted high frequency or low frequency for different waveforms, the researchers wanted to leave part.)