Lower frequency of free-field calibration of hydrophones in emission of tonal signals in a non-anechoic water tank |
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| Authors: | A E Isaev |
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| Affiliation: | (1) Institute of Ecosystem Study, National Research Council, Largo Tonolli 50, 28922 Verbania Pallanza, Italy;(2) Water Research Institute, National Research Council, Brugherio, Italy;(3) ECOCONSULT, Gavirate, Italy;(4) University of Sassari, Sassari, Italy |
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| Abstract: | An approach to estimation of the lower free-field calibration frequency as well as the required magnitude of the water tank
for calibration of hydrophones in a specified frequency range from the cepstrum of a segment of the amplitude response of
the electroacoustic system, projector – hydrophone – non-anechoic water tank – measurement path of standard facility, is proposed.
Estimates of the lower calibration frequency of hydrophones in a water tank with minimal dimension of 6 m in the case of radiation
of quadrature-added harmonic signals are presented. |
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