Patent ID: 8170234
Filing Date: 2012-05-01
Classification: H04R,H04S

Abstract:
1. A method for mapping coherent or incoherent acoustic sources determined from a phased microphone array, comprising the steps of: arranging a plurality of microphones in a grid pattern wherein a plurality of grid locations thereof, are defined; providing a computer connected to said plurality of microphones for receiving signals generated by said microphones in response to sound sensed thereby; forming, using said computer, a linear configuration of equations and unknowns using cross-beamforming characteristics based on said signals generated at varying grid locations among said plurality of grid locations; iteratively determining, using said computer, an equation from said linear configuration of equations and unknowns based on a DAMAS-C inverse formulation; generating, using said computer, an optimized noise source distribution over an identified aeroacoustic source region associated with said phased microphone array in response to said step of iteratively determining said equation among said linear configuration of equations and unknowns; and compiling, using said computer, an output presentation of said optimized noise source distribution wherein said cross-beamforming characteristics are not present therein.