Open Access

Analysis and Modeling of Echolocation Signals Emitted by Mediterranean Bottlenose Dolphins

EURASIP Journal on Advances in Signal Processing20062006:025257

https://doi.org/10.1155/ASP/2006/25257

Received: 21 January 2005

Accepted: 22 August 2005

Published: 28 February 2006

Abstract

We analyzed the echolocation sounds emitted by Mediterranean bottlenose dolphins. We extracted the click trains by visual inspection of the data files recorded along the coast of the Tuscany with the collaboration of the CETUS Research Center. We modeled the extracted sonar clicks as Gaussian or exponential multicomponent signals, we estimated the characteristic parameters and compared the data with the reconstructed signals based on the estimates. Results about the estimation and the data fitting are largely shown in the paper.

[123456789]

Authors’ Affiliations

(1)
Dipartimento di Ingegneria dell'Informazione, Elettronica, Informatica, Telecomunicazioni Università di Pisa

References

  1. Au WWL: The Sonar of Dolphins. Springer, New York, NY, USA; 1993.View ArticleGoogle Scholar
  2. Greco M, Gini F, Verrazzani L, Mannucci M, Alderani L, Nuti S: Modeling and Feature Extraction of Audio Bio-Acoustic Signals Generated by Tyrrhenian Bottlenose Dolphins. Dipartimento di Ingegneria dell' Informazione, Università di Pisa, Pisa, Italy, October 2003Google Scholar
  3. Norris KS, Prescott JH, Asa-Dorian PV, Perkins P: An experimental demonstration of echolocation behavior in the porpoise, Tursiop truncatus, Montagu. Biological Bulletin 1961, 120(2):163-176. 10.2307/1539374View ArticleGoogle Scholar
  4. Au WWL, Carder DA, Penner RH, Scronce BL: Demonstration of adaptation in beluga whale echolocation signals. Journal of the Acoustical Society of America 1985, 77(2):726-730. 10.1121/1.392341View ArticleGoogle Scholar
  5. Stoica P, Moses R: Introduction to Spectral Analysis. Prentice-Hall, Upper Saddle River, NJ, USA; 1997.MATHGoogle Scholar
  6. Li J, Stoica P: Efficient mixed-spectrum estimation with applications to target feature extraction. IEEE Transactions on Signal Processing 1996, 44(2):281-295. 10.1109/78.485924View ArticleGoogle Scholar
  7. Gini F, Greco M, Farina A: Multiple radar targets estimation by exploiting induced amplitude modulation induced by antenna scanning. part I: parameter estimation. IEEE Transactions on Aerospace and Electronic Systems 2003, 39(4):1316-1332. 10.1109/TAES.2003.1261131View ArticleGoogle Scholar
  8. Kamminga C, Stuart ABC: Wave shape estimation of delphinid sonar signals, a parametric model approach. Acoustics Letters 1995, 19(4):70-76.Google Scholar
  9. Zimmer W: Private communication. February 2004Google Scholar

Copyright

© Greco and Gini 2006