Passive stochastic matched filter for Antarctic blue whale call detection

As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizin...

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Published in:The Journal of the Acoustical Society of America
Main Authors: BOUFFAUT, Léa, DRÉO, Richard, LABAT, Valérie, BOUDRAA, Abdel-Ouahab, BARRUOL, Guilhem
Language:English
Published: Acoustical Society of America 2018
Subjects:
Online Access:http://hdl.handle.net/10985/15081
https://doi.org/10.1121/1.5050520
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spelling ftparistech:oai:sam.ensam.eu:10985/15081 2023-05-15T13:38:34+02:00 Passive stochastic matched filter for Antarctic blue whale call detection BOUFFAUT, Léa DRÉO, Richard LABAT, Valérie BOUDRAA, Abdel-Ouahab BARRUOL, Guilhem 2018 application/pdf http://hdl.handle.net/10985/15081 https://doi.org/10.1121/1.5050520 en eng Acoustical Society of America 0001-4966 http://hdl.handle.net/10985/15081 doi:10.1121/1.5050520 1520-8524 info:eu-repo/semantics/openAccess Sciences de l'ingénieur: Traitement du signal et de l'image 2018 ftparistech https://doi.org/10.1121/1.5050520 2022-10-13T11:32:54Z As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizing its output signal to noise ratio (SNR). These assumptions are well adapted to the passive detection of ABW calls where emitted signals are modified by the unknown impulse response of the propagation channel. A filter bank is computed and stored offline based on a priori knowledge of the signal second order statistics and simulated colored sea-noise. Then, the detection relies on online background noise and SNR estimation, realized using time-frequency analysis. The SMF output is cross-correlated with the signal’s reference (SMF þ MF). Its performances are assessed on an ccean bottom seismometer-recorded ground truth dataset of 845 ABW calls, where the location of the whale is known. This dataset provides great SNR variations in diverse soundscapes. The SMF þ MF performances are compared to the commonly used MF and to the Z-detector (a subspace detector for ABW calls). Mostly, the benefits of the use of the SMF þ MF are revealed on low signal to noise observations: in comparison to the MF with identical detection threshold, the false alarm rate drastically decreases while the detection rate stays high. Compared to the Z-detector, it allows the extension of the detection range of ’ 30 km in presence of ship noise with equivalent false discovery rate. Other/Unknown Material Antarc* Antarctic Blue whale Arts & Métiers ParisTech: SAM (Science Arts & Métiers) Antarctic The Journal of the Acoustical Society of America 144 2 955 965
institution Open Polar
collection Arts & Métiers ParisTech: SAM (Science Arts & Métiers)
op_collection_id ftparistech
language English
topic Sciences de l'ingénieur: Traitement du signal et de l'image
spellingShingle Sciences de l'ingénieur: Traitement du signal et de l'image
BOUFFAUT, Léa
DRÉO, Richard
LABAT, Valérie
BOUDRAA, Abdel-Ouahab
BARRUOL, Guilhem
Passive stochastic matched filter for Antarctic blue whale call detection
topic_facet Sciences de l'ingénieur: Traitement du signal et de l'image
description As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizing its output signal to noise ratio (SNR). These assumptions are well adapted to the passive detection of ABW calls where emitted signals are modified by the unknown impulse response of the propagation channel. A filter bank is computed and stored offline based on a priori knowledge of the signal second order statistics and simulated colored sea-noise. Then, the detection relies on online background noise and SNR estimation, realized using time-frequency analysis. The SMF output is cross-correlated with the signal’s reference (SMF þ MF). Its performances are assessed on an ccean bottom seismometer-recorded ground truth dataset of 845 ABW calls, where the location of the whale is known. This dataset provides great SNR variations in diverse soundscapes. The SMF þ MF performances are compared to the commonly used MF and to the Z-detector (a subspace detector for ABW calls). Mostly, the benefits of the use of the SMF þ MF are revealed on low signal to noise observations: in comparison to the MF with identical detection threshold, the false alarm rate drastically decreases while the detection rate stays high. Compared to the Z-detector, it allows the extension of the detection range of ’ 30 km in presence of ship noise with equivalent false discovery rate.
author BOUFFAUT, Léa
DRÉO, Richard
LABAT, Valérie
BOUDRAA, Abdel-Ouahab
BARRUOL, Guilhem
author_facet BOUFFAUT, Léa
DRÉO, Richard
LABAT, Valérie
BOUDRAA, Abdel-Ouahab
BARRUOL, Guilhem
author_sort BOUFFAUT, Léa
title Passive stochastic matched filter for Antarctic blue whale call detection
title_short Passive stochastic matched filter for Antarctic blue whale call detection
title_full Passive stochastic matched filter for Antarctic blue whale call detection
title_fullStr Passive stochastic matched filter for Antarctic blue whale call detection
title_full_unstemmed Passive stochastic matched filter for Antarctic blue whale call detection
title_sort passive stochastic matched filter for antarctic blue whale call detection
publisher Acoustical Society of America
publishDate 2018
url http://hdl.handle.net/10985/15081
https://doi.org/10.1121/1.5050520
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
Blue whale
genre_facet Antarc*
Antarctic
Blue whale
op_relation 0001-4966
http://hdl.handle.net/10985/15081
doi:10.1121/1.5050520
1520-8524
op_rights info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.1121/1.5050520
container_title The Journal of the Acoustical Society of America
container_volume 144
container_issue 2
container_start_page 955
op_container_end_page 965
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