说明：  Hilbert-huang变换代码,主要实现HHT变换中EMD分解的Matlab程序，已经通过实际调试，附运行效果bmp图，若参数稍加修改，可对不同信号进行多模态分解。
(HHT transform EMD decomposition Matlab program, through the actual commissioning, operating results bmp attached map parameters slightly modified, different signals can be multi-modal decomposition.)