On the role of periodic structures in the lower jaw of the atlantic bottlenose dolphin (Tursiops truncatus)
On the role of periodic structures in the lower jaw of the atlantic bottlenose dolphin (Tursiops truncatus)
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DOI：
10.1088/1748-3182/4/1/015005
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发表时间：
2009-03
影响因子：
3.4
通讯作者：
S. Dible;J. Flint;P. Lepper
中科院分区：
文献类型：
--
作者：
S. Dible;J. Flint;P. Lepper
This paper proposes the application of band-gap theory to hearing in the atlantic bottlenose dolphin (Tursiops truncatus). Using the transmission line modelling (TLM) technique and published computed tomography (CT) data of an atlantic bottlenose dolphin (Tursiops truncatus), a series of sound propagation experiments have been carried out. It is shown that the teeth in the lower jaw can be viewed as a periodic array of scattering elements which result in the formation of an acoustic stop band (or band gap) that is angular dependent. It is shown through simple and complex geometry simulations that performance enhancements such as improved gain and isolation between the two receive paths can be achieved. This mechanism has the potential to be exploited in direction-finding sonar.
