On the use of the equivalent source method for free-field calibration of an acoustic radiator in a reverberant tank

It is shown that the use of the equivalent source method allows one to reconstruct the sound field excited by an acoustic radiator in free space from the measurements of the sound field excited by this radiator in a tank with reflecting boundaries. The key assumption underlying the proposed approach...

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Bibliographic Details
Published inJournal of sound and vibration Vol. 455; pp. 69 - 81
Main Authors Virovlyansky, A.L., Deryabin, M.S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier Ltd 01.09.2019
Elsevier Science Ltd
Subjects
Acoustic source
Acoustics
Equivalence
Equivalent source method
Free-field calibration
Green's functions
Heat exchangers
Monopoles
Radiators
Receivers & amplifiers
Sound fields
Tank
Acoustic source
Tank
Equivalent source method
Free-field calibration
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Summary:It is shown that the use of the equivalent source method allows one to reconstruct the sound field excited by an acoustic radiator in free space from the measurements of the sound field excited by this radiator in a tank with reflecting boundaries. The key assumption underlying the proposed approach is that the same set of monopoles with the same strengths can reproduce the field of the radiator both in free space and in the tank. The monopole strengths are reconstructed from the measurements in the tank, and the field in free space is then calculated using the known Green's function. The feasibility of the approach is demonstrated in a tank experiment.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2019.05.018