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New Approaches in Intelligent Image Analysis pp 353–373Cite as

Experimental Evaluation of Opportunity to Improve the Resolution of the Acoustic Maps

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Part of the book series: Intelligent Systems Reference Library ((ISRL,volume 108))

Abstract

The work is devoted to the generation of acoustic maps. The experimental work considers the possibility to increase the resolution of the maps. The work uses two-dimensional microphone array with randomly spaced elements to generate acoustic maps of sources located in its near-field region. In this region, the wavefront is not flat and phase of input signals depends on the direction of arrival and the range as well. The input signals are partially distorted by indoor multipath propagation and related interference of sources emissions. For acoustic mapping with the improved resolution, an algorithm in the frequency domain is proposed. The algorithm is based on the modified method of Capon. Acoustic maps of point-like noise sources are generated. The maps are compared with the maps generated using other standard methods including built-in equipment software. The resolution improvement is up to 2.7 times. The obtained results are valuable in the estimation of the direction of arrival for Noise Exposure Monitoring.

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Acknowledgments

The research work reported in the chapter was partly supported by the Project AComIn “Advanced Computing for Innovation”, grant 316087, funded by the FP7 Capacity Programme (Research Potential of Convergence Regions).

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Authors and Affiliations

  1. Mathematical Methods for Sensor Information Processing Department, Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 25 A, 1113, Sofia, Bulgaria

    Volodymyr  Kudriashov

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  1. Volodymyr  Kudriashov
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Correspondence to Volodymyr  Kudriashov .

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Editors and Affiliations

  1. Technical University of Sofia, Sofia, Bulgaria

    Roumen Kountchev

  2. University of Hyogo, Chuo-ku, Japan

    Kazumi Nakamatsu

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 Kudriashov, V. (2016). Experimental Evaluation of Opportunity to Improve the Resolution of the Acoustic Maps. In: Kountchev, R., Nakamatsu, K. (eds) New Approaches in Intelligent Image Analysis. Intelligent Systems Reference Library, vol 108. Springer, Cham. https://doi.org/10.1007/978-3-319-32192-9_11

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  • DOI: https://doi.org/10.1007/978-3-319-32192-9_11

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-32190-5

  • Online ISBN: 978-3-319-32192-9

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