Definition of the Antarctic and Pygmy blue whale call templates. Application to fast automatic detection

Authors

  • Samaran Flore Centre d'Études Biologiques de Chizé, CNRS, 79360 Villiers en bois, France
  • Olivier Adam Laboratoire Images, Signaux et Systèmes Intelligents, Groupe Ingénierie des Signaux NeuroSensoriels, Université Paris-Est, France
  • Jean-François Motsch Laboratoire Images, Signaux et Systèmes Intelligents, Groupe Ingénierie des Signaux NeuroSensoriels, Université Paris-Est, France
  • Christophe Guinet Centre d'Études Biologiques de Chizé, CNRS, 79360 Villiers en bois, France

Keywords:

Computer networks, Real time systems, Automatic detection, Blue whales

Abstract

This paper deals with the automatic detection of low-frequency Antarctic (Balaenptera musculus intermedia) and Pygmy (B. m. brevicauda) blue whale sounds produced in the Southwestern Indian Ocean. A new detection method based on a matched filter is introduced. Four original match templates are presented and tested against original blue whale subspecies calls. The mathematical formulas of these templates, defined by Gaussian curve models, are provided. The detection threshold is based on the correlation coefficients. The threshold was set to reduce false detections obtained on simulated signals at various signal-to-noise ratios. We focus our work on the true detections of whale calls. Moreover, to obtain a real-time system, we decrease the computational time by decimating the recorded signal (Fs=250Hz). We show that this new method enables us to effectively detect both subspecies in various ambient noises, in the Southern Ocean.

Additional Files

Published

2008-03-01

How to Cite

1.
Flore S, Adam O, Motsch J-F, Guinet C. Definition of the Antarctic and Pygmy blue whale call templates. Application to fast automatic detection. Canadian Acoustics [Internet]. 2008 Mar. 1 [cited 2025 Feb. 13];36(1):93-103. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1997

Issue

Vol. 36 No. 1 (2008)

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.