The current MATLAB program of HHT includes the following modules: 1) eemd.m. The module that performs EMD/EEMD 2) ifndq.m. The module that calculates an instantaneous frequency for a given IMF and 3) extrema.m. A

emd算法中的边界条件函数 %BOUNDARY_CONDITIONS_EMD extends an extrema set to limit edge effects on the interpolations(% [TMIN,TMAX,ZMIN,ZMAX] = BOUNDARY_CONDITIONS_EMD(INDMIN,INDMAX,T,X,Z,NBSYM) % % inputs: % - INDMIN, INDMAX: indices of minima and maxima