An approach for sound sources localization and characterization using array of microphones

Tiangang Wang, Yat Sze Choy

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

In this paper, sound sources are identified and localized by using the time domain beamforming and geometrical approach. The location of the dominant sound source is identified by the conventional delay-and-sum beamforming approach. Subsequently, the acoustics signal of such a dominant sound source can be characterized by multiplying corresponding time delay functions from the source to each sensor. In order to obtain a more accurate acoustic signal of the source, an approach of elimination of the sidelobe which is contributed by other sound sources is developed. Ultimately, the receiving signal can be reconstructed such that the feature of the acoustics signals of each sound source can be obtained. Multiple loops of conventional beamforming require to be performed in order to separate and localize all the main sound sources in the sound field one by one. The approach has been validated by experiment. In order to shorten the computation time due to the searching of the location of the sound sources accurately by beamforming approach, an increasing-spatial-resolution scanning strategy near the sound field of the sound source is also adopted in the current study. The proposed approach gives promising result of the sound source localization and separation in free field condition.
Original languageEnglish
Title of host publication2015 International Conference on Noise and Fluctuations, ICNF 2015
PublisherIEEE
ISBN (Electronic)9781467383356
DOIs
Publication statusPublished - 2 Oct 2015
EventInternational Conference on Noise and Fluctuations, ICNF 2015 - Xian, China
Duration: 2 Jun 20156 Jun 2015

Conference

ConferenceInternational Conference on Noise and Fluctuations, ICNF 2015
Country/TerritoryChina
CityXian
Period2/06/156/06/15

Keywords

  • beamforming
  • sound sources characterization
  • sound sources localization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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