Spatial Localization of Intermittent Noise Sources by Acoustic Antennae

Jacques Lewalle (Inventor)

Research output: Patent

Abstract

A noise source localization process that uses as few as four microphones in an antenna array. The process combines different averaging to the information from the various signals with non-linear (wavelet-based) filtering, cross-correlation and triangulation to more particularly locate a noise source relative to a target point. The process calculates a propagation time based on the distance from a target to each microphones, delays each of the signals according to the propagation time from the target, calculates a continuous wavelet transform for each of the signals to band-pass filter each of the signals according to a predetermined frequency of interest, determines the product of each pair of signals to produce correlation fringes, and locates the noise source based on the product of the pairs of signals.
Original languageEnglish (US)
Patent number9,423,490
StatePublished - Dec 17 2015

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antennas
acoustics
microphones
propagation
triangulation
antenna arrays
products
bandpass filters
wavelet analysis
cross correlation

Cite this

Spatial Localization of Intermittent Noise Sources by Acoustic Antennae. / Lewalle, Jacques (Inventor).

Patent No.: 9,423,490.

Research output: Patent

Lewalle, Jacques (Inventor). / Spatial Localization of Intermittent Noise Sources by Acoustic Antennae. Patent No.: 9,423,490.
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