Localisation of right whale sounds in the workshop bay of fundy dataset by spectrogram cross-correlation and hyperbolic fixing

Authors

  • Marjo H. Laurinolli Department of Fisheries, Bedford Institute of Oceanography, PO Box 1006, Dartmouth, NS B2Y 4A2
  • Alex E. Hay Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1

Keywords:

Acoustic waves, Correlation methods, Error analysis, Hydrophones, Oceanography, Spectrum analysis, Datasets, Gunshot sounds, Hyperbolic fixing, Whale sounds

Abstract

In September 2002, five ocean-bottom hydrophones recorded acoustic data in the Bay of Fundy at 1200 Hz sampling frequency for 165.6 h. Arrival time differences for 15 right whale sounds (5 gunshots, 10 tonals) were determined by spectrogram cross-correlation of logarithmic (i.e. dB re 1 ?Pa 2/Hz) spectral densities. The sound source locations were estimated from the intersections of the linearly independent equal time difference hyperbolae for different hydrophone pairs. The root-mean-square (RMS) localisation error was examined using three sound speeds. The lowest average RMS error of 0.85 km was obtained for 1485 m/s, roughly 7 m/s less than the measured average sound speed. The non-gunshot sounds had greater localisation error than the gunshot sounds by 0.4 km. The mean and maximum ranges from the centre hydrophone in the array were 10 km and 33 km respectively.

Additional Files

Published

2004-06-01

How to Cite

1.
Laurinolli MH, Hay AE. Localisation of right whale sounds in the workshop bay of fundy dataset by spectrogram cross-correlation and hyperbolic fixing. Canadian Acoustics [Internet]. 2004 Jun. 1 [cited 2024 Dec. 5];32(2):132-6. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1596

Issue

Vol. 32 No. 2 (2004)

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.