Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam
© 2017 Author(s). Harbor porpoises (Phocoena phocoena) use narrow band echolocation signals for detecting and locating prey and for spatial orientation. In this study, acoustic impedance values of tissues in the porpoise's head were calculated from computer tomography (CT) scan and the correspo...
Published in: | The Journal of the Acoustical Society of America |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Acoustical Society of America
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11937/55988 https://doi.org/10.1121/1.4983663 |
id |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/55988 |
---|---|
record_format |
openpolar |
spelling |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/55988 2023-06-11T04:16:00+02:00 Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam Wei, C. Au, W. Ketten, Darlene Song, Z. Zhang, Y. 2017 restricted https://hdl.handle.net/20.500.11937/55988 https://doi.org/10.1121/1.4983663 unknown Acoustical Society of America http://hdl.handle.net/20.500.11937/55988 doi:10.1121/1.4983663 Journal Article 2017 ftcurtin https://doi.org/20.500.11937/5598810.1121/1.4983663 2023-05-30T19:48:56Z © 2017 Author(s). Harbor porpoises (Phocoena phocoena) use narrow band echolocation signals for detecting and locating prey and for spatial orientation. In this study, acoustic impedance values of tissues in the porpoise's head were calculated from computer tomography (CT) scan and the corresponding Hounsfield Units. A two-dimensional finite element model of the acoustic impedance was constructed based on CT scan data to simulate the acoustic propagation through the animal's head. The far field transmission beam pattern in the vertical plane and the waveforms of the receiving points around the forehead were compared with prior measurement results, the simulation results were qualitatively consistent with the measurement results. The role of the main structures in the head such as the air sacs, melon and skull in the acoustic propagation was investigated. The results showed that air sacs and skull are the major components to form the vertical beam. Additionally, both beam patterns and sound pressure of the sound waves through four positions deep inside the melon were demonstrated to show the role of the melon in the biosonar sound propagation processes in the vertical plane. Article in Journal/Newspaper Phocoena phocoena Curtin University: espace The Journal of the Acoustical Society of America 141 6 4179 4187 |
institution |
Open Polar |
collection |
Curtin University: espace |
op_collection_id |
ftcurtin |
language |
unknown |
description |
© 2017 Author(s). Harbor porpoises (Phocoena phocoena) use narrow band echolocation signals for detecting and locating prey and for spatial orientation. In this study, acoustic impedance values of tissues in the porpoise's head were calculated from computer tomography (CT) scan and the corresponding Hounsfield Units. A two-dimensional finite element model of the acoustic impedance was constructed based on CT scan data to simulate the acoustic propagation through the animal's head. The far field transmission beam pattern in the vertical plane and the waveforms of the receiving points around the forehead were compared with prior measurement results, the simulation results were qualitatively consistent with the measurement results. The role of the main structures in the head such as the air sacs, melon and skull in the acoustic propagation was investigated. The results showed that air sacs and skull are the major components to form the vertical beam. Additionally, both beam patterns and sound pressure of the sound waves through four positions deep inside the melon were demonstrated to show the role of the melon in the biosonar sound propagation processes in the vertical plane. |
format |
Article in Journal/Newspaper |
author |
Wei, C. Au, W. Ketten, Darlene Song, Z. Zhang, Y. |
spellingShingle |
Wei, C. Au, W. Ketten, Darlene Song, Z. Zhang, Y. Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
author_facet |
Wei, C. Au, W. Ketten, Darlene Song, Z. Zhang, Y. |
author_sort |
Wei, C. |
title |
Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
title_short |
Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
title_full |
Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
title_fullStr |
Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
title_full_unstemmed |
Biosonar signal propagation in the harbor porpoise's (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam |
title_sort |
biosonar signal propagation in the harbor porpoise's (phocoena phocoena) head: the role of various structures in the formation of the vertical beam |
publisher |
Acoustical Society of America |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.11937/55988 https://doi.org/10.1121/1.4983663 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
http://hdl.handle.net/20.500.11937/55988 doi:10.1121/1.4983663 |
op_doi |
https://doi.org/20.500.11937/5598810.1121/1.4983663 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
141 |
container_issue |
6 |
container_start_page |
4179 |
op_container_end_page |
4187 |
_version_ |
1768373344985415680 |