Advanced

An echolocation visualization and interface system for dolphin research

Amundin, Mats; Starkhammar, Josefin LU ; Evander, Mikael LU ; Almqvist, Monica LU ; Lindström, Kjell LU and Persson, Hans W LU (2008) In Journal of the Acoustical Society of America 123(2). p.1188-1194
Abstract
The present study describes the development and testing of a tool for dolphin research. This tool was able to visualize the dolphin echolocation signals as well as function as an acoustically operated “touch screen”. The system consisted of a matrix of hydrophones attached to a semi-transparent screen, which was lowered in front of an underwater acrylic panel in a dolphin pool. When a dolphin aimed its sonar beam at the screen, the hydrophones measured the received sound pressure levels. These hydrophone signals were then transferred to a computer where they were translated into a video image that corresponds to the dynamic sound pressure variations in the sonar beam and the location of the beam axis. There was a continuous projection of... (More)
The present study describes the development and testing of a tool for dolphin research. This tool was able to visualize the dolphin echolocation signals as well as function as an acoustically operated “touch screen”. The system consisted of a matrix of hydrophones attached to a semi-transparent screen, which was lowered in front of an underwater acrylic panel in a dolphin pool. When a dolphin aimed its sonar beam at the screen, the hydrophones measured the received sound pressure levels. These hydrophone signals were then transferred to a computer where they were translated into a video image that corresponds to the dynamic sound pressure variations in the sonar beam and the location of the beam axis. There was a continuous projection of the image back onto the hydrophone matrix screen, giving the dolphin an immediate visual feedback to its sonar output. The system offers a whole new experimental methodology in dolphin research and since it is software-based, many different kinds of scientific questions can be addressed. The results were promising and motivate further development of the system and studies of sonar and cognitive abilities of dolphins. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of the Acoustical Society of America
volume
123
issue
2
pages
1188 - 1194
publisher
American Institute of Physics
external identifiers
  • wos:000253004800057
  • scopus:38849097800
ISSN
1520-8524
DOI
10.1121/1.2828213
language
English
LU publication?
yes
id
8a2d87e5-93f4-4f94-b09d-0cef25c6b00d (old id 768767)
date added to LUP
2008-01-07 11:06:04
date last changed
2017-01-15 03:58:23
@article{8a2d87e5-93f4-4f94-b09d-0cef25c6b00d,
  abstract     = {The present study describes the development and testing of a tool for dolphin research. This tool was able to visualize the dolphin echolocation signals as well as function as an acoustically operated “touch screen”. The system consisted of a matrix of hydrophones attached to a semi-transparent screen, which was lowered in front of an underwater acrylic panel in a dolphin pool. When a dolphin aimed its sonar beam at the screen, the hydrophones measured the received sound pressure levels. These hydrophone signals were then transferred to a computer where they were translated into a video image that corresponds to the dynamic sound pressure variations in the sonar beam and the location of the beam axis. There was a continuous projection of the image back onto the hydrophone matrix screen, giving the dolphin an immediate visual feedback to its sonar output. The system offers a whole new experimental methodology in dolphin research and since it is software-based, many different kinds of scientific questions can be addressed. The results were promising and motivate further development of the system and studies of sonar and cognitive abilities of dolphins.},
  author       = {Amundin, Mats and Starkhammar, Josefin and Evander, Mikael and Almqvist, Monica and Lindström, Kjell and Persson, Hans W},
  issn         = {1520-8524},
  language     = {eng},
  number       = {2},
  pages        = {1188--1194},
  publisher    = {American Institute of Physics},
  series       = {Journal of the Acoustical Society of America},
  title        = {An echolocation visualization and interface system for dolphin research},
  url          = {http://dx.doi.org/10.1121/1.2828213},
  volume       = {123},
  year         = {2008},
}