{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T10:48:44Z","timestamp":1790246924897,"version":"4.1.0"},"reference-count":43,"publisher":"Acoustical Society of America (ASA)","issue":"5","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,11,1]]},"abstract":"<jats:p>This paper addresses the problem of automated detection of Z-calls emitted by Antarctic blue whales (B. m. intermedia). The proposed solution is based on a subspace detector of sigmoidal-frequency signals with unknown time-varying amplitude. This detection strategy takes into account frequency variations of blue whale calls as well as the presence of other transient sounds that can interfere with Z-calls (such as airguns or other whale calls). The proposed method has been tested on more than 105\u2009h of acoustic data containing about 2200\u2009Z-calls (as found by an experienced human operator). This method is shown to have a correct-detection rate of up to more than 15% better than the extensible bioacoustic tool package, a spectrogram-based correlation detector commonly used to study blue whales. Because the proposed method relies on subspace detection, it does not suffer from some drawbacks of correlation-based detectors. In particular, it does not require the choice of an a priori fixed and subjective template. The analytic expression of the detection performance is also derived, which provides crucial information for higher level analyses such as animal density estimation from acoustic data. Finally, the detection threshold automatically adapts to the soundscape in order not to violate a user-specified false alarm rate.<\/jats:p>","DOI":"10.1121\/1.4934271","type":"journal-article","created":{"date-parts":[[2015,11,18]],"date-time":"2015-11-18T18:00:37Z","timestamp":1447869637000},"page":"3105-3117","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":39,"title":["Automated detection of Antarctic blue whale calls"],"prefix":"10.1121","volume":"138","author":[{"given":"Francois-Xavier","family":"Socheleau","sequence":"first","affiliation":[{"name":"Institut Mines-Telecom , Telecom Bretagne, Unit\u00e9s Mixtes de Recherche, Centre National de la Recherche Scientifique 6285, Laboratoire des Sciences et Techniques de l'Information, de la Communication et de la Connaissance, Technop\u00f4le Brest Iroise, CS 83818, 29238 Brest Cedex, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuelle","family":"Leroy","sequence":"additional","affiliation":[{"name":"University of Brest , Centre National de la Recherche Scientifique, Laboratoire Domaines Oc\u00e9aniques, Institut Universitaire Europ\u00e9en de la Mer, 29280 Plouzan\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andres","family":"Carvallo Pecci","sequence":"additional","affiliation":[{"name":"Institut Mines-Telecom , Telecom Bretagne, Unit\u00e9s Mixtes de Recherche, Centre National de la Recherche Scientifique 6285, Laboratoire des Sciences et Techniques de l'Information, de la Communication et de la Connaissance, Technop\u00f4le Brest Iroise, CS 83818, 29238 Brest Cedex, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Flore","family":"Samaran","sequence":"additional","affiliation":[{"name":"\u00c9cole Nationale Sup\u00e9rieure de Techniques Avanc\u00e9es de Bretagne , 2 Rue Francois Verny, 29806 Brest Cedex 9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julien","family":"Bonnel","sequence":"additional","affiliation":[{"name":"\u00c9cole Nationale Sup\u00e9rieure de Techniques Avanc\u00e9es de Bretagne , Unit\u00e9s Mixtes de Recherche, Centre National de la Recherche Scientifique 6285, Laboratoire des Sciences et Techniques de l'Information, de la Communication et de la Connaissance, 2 Rue Francois Verny, 29806 Brest Cedex 9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean-Yves","family":"Royer","sequence":"additional","affiliation":[{"name":"University of Brest , Centre National de la Recherche Scientifique, Laboratoire Domaines Oc\u00e9aniques, Institut Universitaire Europ\u00e9en de la Mer, 29280 Plouzan\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","published-online":{"date-parts":[[2015,11,18]]},"reference":[{"key":"2023072105004630500_c1","doi-asserted-by":"publisher","first-page":"125","DOI":"10.1111\/j.1748-7692.2008.00239.x","article-title":"Blue and fin whale acoustic presence around Antarctica during 2003 and 2004","volume":"25","year":"2009","journal-title":"Mar. 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