Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods
Sperm whale clicks are characterized by a multi-pulsed structure. The time lag between consecutive pulses, i.e., the inter-pulse interval (IPI), is related to the size of the sound production organ such that its measurement provides a means to acoustically estimate the size of individual whales. Due...
Published in: | The Journal of the Acoustical Society of America |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/459cc1d7-fa9a-4f61-92de-974d314a94b3 2024-06-23T07:56:58+00:00 Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods Antunes, Ricardo Rendell, Luke Gordon, Jonathan 2010-05 https://research-portal.st-andrews.ac.uk/en/researchoutput/measuring-interpulse-intervals-in-sperm-whale-clicks(459cc1d7-fa9a-4f61-92de-974d314a94b3).html https://doi.org/10.1121/1.3327509 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/measuring-interpulse-intervals-in-sperm-whale-clicks(459cc1d7-fa9a-4f61-92de-974d314a94b3).html info:eu-repo/semantics/closedAccess Antunes , R , Rendell , L & Gordon , J 2010 , ' Measuring inter-pulse intervals in sperm whale clicks : consistency of automatic estimation methods ' , Journal of the Acoustical Society of America , vol. 127 , no. 5 , pp. 3239-3247 . https://doi.org/10.1121/1.3327509 Physeter-catodon Sound production VOCALIZATIONS Length Nose article 2010 ftunstandrewcris https://doi.org/10.1121/1.3327509 2024-06-13T00:28:13Z Sperm whale clicks are characterized by a multi-pulsed structure. The time lag between consecutive pulses, i.e., the inter-pulse interval (IPI), is related to the size of the sound production organ such that its measurement provides a means to acoustically estimate the size of individual whales. Due to off-axis effects the identification of pulses is, however, not always straightforward, and automatic measurement methods provide not only more objective estimation, but may also facilitate IPI estimation in cases where single click measurements are ambiguous. In particular, averaging measurements over a time series of clicks from the same whale could enhance the discrimination of time invariant pulses. The authors developed two automatic methods of automatic IPI measurement based on waveform and autocorrelation averaging and compared their accuracy and consistency with other previously used methods. Manual measurement by an experienced operator provided the most self-consistent estimates. The autocorrelation averaging technique had the best overall performance of the automated methods achieving a very similar performance to manual measurement. On some recordings cepstrum averaging methods converged when autocorrelation did not. Therefore, applying both of these automated methods and choosing the best of the two are recommended. Article in Journal/Newspaper Sperm whale University of St Andrews: Research Portal Catodon ENVELOPE(-59.966,-59.966,-63.500,-63.500) The Journal of the Acoustical Society of America 127 5 3239 3247 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Physeter-catodon Sound production VOCALIZATIONS Length Nose |
spellingShingle |
Physeter-catodon Sound production VOCALIZATIONS Length Nose Antunes, Ricardo Rendell, Luke Gordon, Jonathan Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
topic_facet |
Physeter-catodon Sound production VOCALIZATIONS Length Nose |
description |
Sperm whale clicks are characterized by a multi-pulsed structure. The time lag between consecutive pulses, i.e., the inter-pulse interval (IPI), is related to the size of the sound production organ such that its measurement provides a means to acoustically estimate the size of individual whales. Due to off-axis effects the identification of pulses is, however, not always straightforward, and automatic measurement methods provide not only more objective estimation, but may also facilitate IPI estimation in cases where single click measurements are ambiguous. In particular, averaging measurements over a time series of clicks from the same whale could enhance the discrimination of time invariant pulses. The authors developed two automatic methods of automatic IPI measurement based on waveform and autocorrelation averaging and compared their accuracy and consistency with other previously used methods. Manual measurement by an experienced operator provided the most self-consistent estimates. The autocorrelation averaging technique had the best overall performance of the automated methods achieving a very similar performance to manual measurement. On some recordings cepstrum averaging methods converged when autocorrelation did not. Therefore, applying both of these automated methods and choosing the best of the two are recommended. |
format |
Article in Journal/Newspaper |
author |
Antunes, Ricardo Rendell, Luke Gordon, Jonathan |
author_facet |
Antunes, Ricardo Rendell, Luke Gordon, Jonathan |
author_sort |
Antunes, Ricardo |
title |
Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
title_short |
Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
title_full |
Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
title_fullStr |
Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
title_full_unstemmed |
Measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
title_sort |
measuring inter-pulse intervals in sperm whale clicks:consistency of automatic estimation methods |
publishDate |
2010 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/measuring-interpulse-intervals-in-sperm-whale-clicks(459cc1d7-fa9a-4f61-92de-974d314a94b3).html https://doi.org/10.1121/1.3327509 |
long_lat |
ENVELOPE(-59.966,-59.966,-63.500,-63.500) |
geographic |
Catodon |
geographic_facet |
Catodon |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_source |
Antunes , R , Rendell , L & Gordon , J 2010 , ' Measuring inter-pulse intervals in sperm whale clicks : consistency of automatic estimation methods ' , Journal of the Acoustical Society of America , vol. 127 , no. 5 , pp. 3239-3247 . https://doi.org/10.1121/1.3327509 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/measuring-interpulse-intervals-in-sperm-whale-clicks(459cc1d7-fa9a-4f61-92de-974d314a94b3).html |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1121/1.3327509 |
container_title |
The Journal of the Acoustical Society of America |
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127 |
container_issue |
5 |
container_start_page |
3239 |
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3247 |
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