HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 19 SEARCH STATISTICS PAS - GDANSK DIVISION

Bioacoustic range equation

pp. 307-318, vol. 19, 2016

Krzysztof J. Opieliński
Chair of Acoustics and Multimedia, Electronics Faculty Wroclaw University of Science and Technology, Poland

Tadeusz Gudra
Chair of Acoustics and Multimedia, Electronics Faculty Wroclaw University of Science and Technology, Poland

Key words: bioacoustic link; hydroacoustic link; range equation; biological media

Abstract: In order to describe and analyze the bioacoustic link, the authors of this study used a modified range explicit equation formulated for a hydroacoustic link. The equation makes it possible to design a bioacoustic link by assuming a given study range in a biological medium, and estimating the required power ratio or power level drop, and then selecting a value for the ratio by means of ultrasonic transducer parameters. A biological medium submerged in water between a transmitting and receiving ultrasonic transducer was studied in a streamlined manner as quasi-homogeneous, or more specifically, in the form of a multilayered tissue structure with parallel border surfaces. In the paper, sample calculations of the relation between power level drop and the length of the bioacoustic link in biological media, for ultrasonic wave frequency in the range of 1 – 5 MHz were performed; using a modified range explicit equation formulated for a hydroacoustic link. The calculations were verified in an experiment.

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