Simulation of ultrasound beam formation of baiji (Lipotes vexillifer) with a finite element model
Simulation of ultrasound beam formation of baiji (Lipotes vexillifer) with a finite element model
复制标题
用有限元模型模拟白鱀鱼（Lipotes vexillifer）的超声波束形成
DOI：
10.1121/1.4883597
复制
发表时间：
2014-07-01
影响因子：
2.4
通讯作者：
Au, Whitlow W. L.
中科院分区：
文献类型：
--
作者：
Wei, Chong;Zhang, Yu;Au, Whitlow W. L.
The baiji (Lipotes vexillifer) of the Yangtze River possesses a sophisticated biosonar system. In this study, a finite element approach was used to numerically investigate the propagation of acoustic waves through the head of the Yangtze River dolphin, which possesses an inhomogeneous and complex structure. The acoustic intensity distribution predicted from models with and without the melon and/or skull showed that the emitted sound beam was narrow and formed a highly directed acoustic beam, and the skull and melon significantly enhanced the directional characteristics of the emitted sound. Finally, for a short duration impulsive source, the emitted sound pressure distributions were also simulated at different propagation times. The results provide useful information for better understanding the operation of the biosonar system in this rare and perhaps extinct animal. (C) 2014 Acoustical Society of America.
