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Analysis of institutional authors

Miralles, RCorresponding AuthorGallardo, CAuthor
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Extracting dolphin whistles in complex acoustic scenarios: a case study in the Bay of Biscay

Publicated to:Bioacoustics-The International Journal Of Animal Sound And Its Recording. 33 (3): 260-277 - 2024-05-10 33(3), DOI: 10.1080/09524622.2024.2338387

Authors: Miralles, Ramon; Gallardo, Carles; Lara, Guillermo; Bou Cabo, Manuel

Affiliations

Spanish Inst Oceanog IEO CSIC, Underwater Acoust Grp - Author
Univ Politecn Valencia, Inst Telecommun & Multimedia Applicat iTEAM - Author

Abstract

Accurate whistle contour extraction is crucial in many dolphin behavioural studies. Traditionally, whistle contour extraction involves a first step of finding whistle candidates by peak-level detection in the time-frequency domain, followed by a determination of when peaks are close enough to each other to be part of the same whistle contour. In complex scenarios, such as those with a large number of individuals vocalising simultaneously or those with a sudden increase in background noise, peak-level detection may not provide a number of accurate whistle candidates that is large enough to extract the whistle contour or to disambiguate individual whistles when they cross one another. In these adverse scenarios, a different approach, based on the pyknogram representation, can produce a more accurate detection of whistle candidates and evenly distributed candidates throughout the duration of the whistle. This work compares the peak-level extraction approach of the spectrogram with the point-density extraction approach of the pyknogram. We propose a technique that combines estimates of the central frequency and bandwidth to extract whistle candidates in adverse scenarios. The method has been successfully used for the vocalisation extraction of dolphins in the Bay of Biscay (Spain) using a database of more than 2000 dolphin whistles.

Keywords
Automated extractionCetacean whistle extractionFrequencyPassive acoustic monitoringTime-frequency analysisTrackingUnderwater acoustics

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Bioacoustics-The International Journal Of Animal Sound And Its Recording due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 58/181, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Zoology. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Ecology.

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-16:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 3 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    Leadership analysis of institutional authors

    There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Miralles Ricós, Ramón) .

    the author responsible for correspondence tasks has been Miralles Ricós, Ramón.