Patent ID: 7126876

Claim:
A method for resolving harmonic ambiguity from a frequency spectrum, said method comprising the steps of: selecting a single frequency (f selected ) from a frequency spectrum; assuming that the selected frequency (f selected ) is an nth harmonic partial of a harmonic set H=fo*[1 2 3 4 5 6 7 8 9 . . . n] of all harmonic partials N within said frequency spectrum under a constraint that n<N; deriving an N×M ambiguity matrix consisting of all possible harmonic sets H associated with the selected frequency (f selected ) that f selected could be a member of, where N comprises all possible harmonic members {integers of from 1 to N} and M comprises all possible hypothetical fundamentals {f o =f selected /(1 thru N)}, said ambiguity matrix providing a finite solution space for estimation of a correct fundamental frequency f o from said harmonic set H=f o *[1 2 3 4 5 6 7 8 9 . . . n]; and resolving ambiguities associated with multiple solutions that would otherwise result in other possible sub-harmonic sets being selected.