Estimation of the amplitude-frequency response of a sound source from measurements in a tank with reflecting boundaries

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The results of a laboratory experiment testing a method for reconstructing a sound field excited by a calibrated source in free space from measurements of a field excited by the same source in a tank with reflecting boundaries are presented. The reconstruction procedure is based on the use of an etalon acoustic monopole and comparison of the fields emitted by it from specially selected points of the tank with the field of the calibrated source. In the experiment, the frequency dependence of the field intensity of the calibrated source averaged over a sphere of large radius was evaluated.

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作者简介

V. Bakhtin

Institute of Applied Physics of the Russian Academy of Sciences; Lobachevsky State University

Email: viro@ipfran.ru
俄罗斯联邦, 603950, N. Novgorod, Ul’yanov str., 46; 603022, N. Novgorod, Gagarin Ave., 23

A. Virovlyansky

Institute of Applied Physics of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: viro@ipfran.ru
俄罗斯联邦, 603950, N. Novgorod, Ul’yanov str., 46

M. Deryabin

Institute of Applied Physics of the Russian Academy of Sciences; Lobachevsky State University

Email: viro@ipfran.ru
俄罗斯联邦, 603950, N. Novgorod, Ul’yanov str., 46; 603022, N. Novgorod, Gagarin Ave., 23

A. Kazarova

Institute of Applied Physics of the Russian Academy of Sciences

Email: viro@ipfran.ru
俄罗斯联邦, 603950, N. Novgorod, Ul’yanov str., 46

参考

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2. Fig. 1. Positions of the EI (dots in the center) and receiving hydrophones (small cylinders).

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3. Fig. 2. Top: B&K 8103 hydrophone used as a reference monopole. Bottom: source under calibration.

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4. Fig. 3. The dots show the ratios of the CI and EM amplitudes for all 729 pairs at a frequency of 7 kHz. The histogram of the distribution of these ratios is shown in the upper left corner.

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5. Fig. 4. Estimates of the ratio of the intensities of the CI and EM obtained using estimates of the ratio of the amplitudes of these sources (thick solid curve), (thin solid curve), (dashed line) and (dots).

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