3D diarization of a sperm whale click cocktail party by an ultra high sampling rate portable hydrophone array for assessing individual cetacean growth curves

• Main Authors: Ferrari, Maxence, Glotin, Hervé, Oger, Marina, Marxer, Ricard, Asch, Mark, Gies, Valentin, Sarano, Francois
• Other Authors: Laboratoire d'Informatique et des Systèmes (LIS) (Marseille, Toulon) (LIS), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Amiénois de Mathématique Fondamentale et Appliquée - UMR CNRS 7352 UPJV (LAMFA), Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), DYNamiques de l’Information (DYNI), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2020
• Subjects: 3 localisation; bioacoustics; near field; animal diarization; [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]; [PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]; Sperm whale
• Online Access: https://hal.science/hal-03230843; https://hal.science/hal-03230843/document; https://hal.science/hal-03230843/file/001097.pdf; https://doi.org/10.48465/fa.2020.1097

International audience Passive acoustics allow us to study group of animals and obtain information that could not be gathered through other methods. In this paper we study a set of near-field audiovisual recordings of a sperm whale pod, acquired with a specific ultra high-frequency and small aperture antenna. This antenna is equiped of the JASON DAC, allowing up to 5 channels recordings at 2 MHz sampling rate. This high velocity recording allows to reduce the size of the array, while keeping good angle of arrival resolution. We then demonstrate how TDoA and non linear solver yield to the localisation of nearly all the clicks emitted by the animal that are filmed. Such characterization of their vocalizations, correlated to individual identifications from visual identification opens avenue to possible acoustic individual signature.