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Improving the Localization Accuracy of Dipole Sound Sources Using Planar Microphone Arrays

  • ATMOSPHERIC AND AEROACOUSTICS
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Abstract

A method has been developed for tuning the microphone array for optimal visualization of acoustic dipoles. Acoustic dipoles were generated under experimental conditions in an anechoic chamber using a subsonic air flow around a thin metal rod and thin rectangular plate. To confirm the operability of this approach, we compared the visualization maps obtained using the approach with the results obtained with a similar array class tuned in the traditional monopole method. The developed approach, which adapts the array to the dipole radiation model and modifies the transfer functions that take into account the influence of the incidence pattern of sound waves, demonstrates an increase in the array’s dynamic range with optimal microphone placement.

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Funding

The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the program of activities of the Perm Scientific and Educational Center “Rational Subsoil Use.” Experiments were conducted with the use of the unique scientific installation “Acoustic Anechoic Chamber with Aerodynamic Noise Sources, registration no. 500617. Part of the study related to setting up a conventional array to extract dipoles was carried out in the TsAGI AC-2 anechoic chamber with flow, upgraded with the financial support of the Ministry of Science and Higher Education of the Russian Federation under agreement no. 075-15-2022-1036.

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Authors and Affiliations

  1. Moscow Research Complex Central Aerohydrodamic Institute (TsAGI), 105005, Moscow, Russia

    V. F. Kopiev

  2. Perm National Research Polytechnic University, 614990, Perm, Russia

    V. V. Ershov, I. V. Khramtsov & O. Yu. Kustov

Authors
  1. V. F. Kopiev
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  2. V. V. Ershov
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  3. I. V. Khramtsov
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  4. O. Yu. Kustov
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Corresponding author

Correspondence to V. V. Ershov.

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Kopiev, V.F., Ershov, V.V., Khramtsov, I.V. et al. Improving the Localization Accuracy of Dipole Sound Sources Using Planar Microphone Arrays. Acoust. Phys. 69, 206–219 (2023). https://doi.org/10.1134/S1063771023600055

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  • DOI: https://doi.org/10.1134/S1063771023600055

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