The Local Mean Decomposition Method.

The Local Mean Decomposition (LMD) method decomposes complicated multicomponent signals into their component parts. Each of the derived components is the product of an envelope signal, and a purely frequency modulated (fm) signal. The derived components are called Product Functions (PFs). Instantaneous phase and frequency values are calculated from the fm signal. The PFs are derived iteratively. Each PF has a lower average frequency than the previously derived PF in the PF series.