说明：  从文件为自己搜集、更改的有关HHT、Hilbert变换、FFT分析以及一个比较实例，运行可靠；在调用到其他相关程序中时只需要自己更改相关参数进行设置即可。
(The HHT, Hilbert transform, FFT analysis, and a comparative example collected and changed from the file for yourself are reliable in operation; you only need to change the relevant parameters to set them when calling into other related programs.)