Patent Document ID: 8660848
Application ID: 13213824
Patent Flag: 1

Claim One:
1. A computer implemented method for analyzing a physical signal obtained from a physical process, the method being implemented by a processor and computer usable media having computer readable code embodied therein, the computer readable code causing the processor to implement steps in the method, the computer implemented method comprising the step of: obtaining an intrinsic mode function indicative of intrinsic oscillatory behavior of the physical signal by the steps of: identifying local maximum and minimum of a signal; the signal being the physical signal in an initial step; the signal being sampled at a number of time values; determining a number of midpoints; each midpoints being between consecutive maxima and minima; obtaining a spline curve connecting the midpoints; obtaining, at each time value from the number of time values, a component value by subtracting a signal value from a spline curve value; and recursively performing a sifting step until successive component signal values are substantially equal; wherein a signal comprising the component values of a resulting recursive sifting is the intrinsic mode function; wherein the physical signal is a one-dimensional physical signal.