Invention Grant
- Patent Title: Deconvolution methods and systems for the mapping of acoustic sources from phased microphone arrays
- Patent Title (中): 用于从相位麦克风阵列映射声源的解卷积方法和系统
-
Application No.: US11126518Application Date: 2005-05-10
-
Publication No.: US07783060B2Publication Date: 2010-08-24
- Inventor: Thomas F. Brooks , William M. Humphreys, Jr.
- Applicant: Thomas F. Brooks , William M. Humphreys, Jr.
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee Address: US DC Washington
- Agent Helen M. Galus
- Main IPC: H04R3/00
- IPC: H04R3/00

Abstract:
A method and system for mapping acoustic sources determined from a phased microphone array. A plurality of microphones are arranged in an optimized grid pattern including a plurality of grid locations thereof. A linear configuration of N equations and N unknowns can be formed by accounting for a reciprocal influence of one or more beamforming characteristics thereof at varying grid locations among the plurality of grid locations. A full-rank equation derived from the linear configuration of N equations and N unknowns can then be iteratively determined. A full-rank can be attained by the solution requirement of the positivity constraint equivalent to the physical assumption of statically independent noise sources at each N location. An optimized noise source distribution is then generated over an identified aeroacoustic source region associated with the phased microphone array in order to compile an output presentation thereof, thereby removing the beamforming characteristics from the resulting output presentation.
Public/Granted literature
- US20060256975A1 Deconvolution methods and systems for the mapping of acoustic sources from phased microphone arrays Public/Granted day:2006-11-16
Information query