该程序绘制了仿真信号的FFT频谱和功率谱，并调用emd分析方法，绘制了emd分解结果，以及瞬时包络和瞬时频率图，还有Hilbert-Huang谱和Hilbert边际谱。-The program draws the FFT spectrum and the power spectrum of the simulated signal and call emd analysis, drawn emd decomposition and instantaneous envelope and insta

希尔伯特黄变换的MATLAB程序，可以对数据自动进行emd分解，并画出相应函数的边际谱。-Hilbert Huang Transform MATLAB program, the data can automatically emd decomposition and draw marginal spectrum corresponding function.