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Accurate sound source localization in a reverberant environment using multiple acoustic sensors

Atmoko, H, Tan, DC, Tian, GY and Fazenda, BM 2008, 'Accurate sound source localization in a reverberant environment using multiple acoustic sensors' , Measurement Science and Technology, 19 (2) .

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    Abstract

    This paper introduces a new method for the estimation of sound source distance and direction using at least three microphone sensors in indoor environments. Unlike the other methods that normally use approximations in obtaining the time difference between sensors, this method exploits the existed geometrical relationships of the sensors to form an exact solution to estimating the source position. To overcome reverberation, an enhancing pre-process has been used for different sound sources with different spectra, e.g., single frequency, multiple frequencies and different noise shapes. Source direction and distances are estimated from time of sound wave travel and distances of acoustic sensors. Using the method described in this paper a level of 1° accuracy is obtained. Several experimental tests have been undertaken that verify the results. Conclusions and future work are also described.

    Item Type: Article
    Themes: Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
    Journal or Publication Title: Measurement Science and Technology
    Publisher: Institute of Physics
    Refereed: Yes
    ISSN: 0957-0233
    Depositing User: BM Fazenda
    Date Deposited: 22 Jun 2010 10:14
    Last Modified: 20 Aug 2013 17:19
    URI: http://usir.salford.ac.uk/id/eprint/9388

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