说明：  HHT变换的核心是EMD，在此项过程中通过EMD的编程和HHT的编程来实现了希尔伯特黄变换。可以看出处理此方法用来处理非线性信号为更好的方法。
(HHT Transform is the core of EMD, in the process of programming through EMD and HHT programming to achieve the Hilbert Huang Transform. As can be seen this method used to deal with non-linear signal processing for better alternatives.)