Patent ID: 9557400
Date: 2017-01-31
CPC Classifications: G01S

Claim:
1. A method for determining a three-dimensional location of at least one noise source including the steps of: a) providing a plurality of microphones arranged each at a respective one of a plurality of microphone locations such that the plurality of microphones are not all in a single plane; b) measuring sound from at least one noise source in an unknown location with the plurality of microphones each at the respective ones of the plurality of microphone locations; and c) determining by the use of a processor a three-dimensional sound pressure field, including at a three-dimensional location of the at least one noise source, based only upon the measurements of sound by the plurality of microphones only taken from the respective ones of the plurality of microphone locations in said step b) and determining time delays in the measurements of the sound between the plurality of said microphones, wherein said step c) includes the step of comparing slopes of the measured sound from the plurality of microphones in a period of time.