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LIST - Acoustique [LIST-Acoustics & Environmental hydroacoustics lab] (LIST/a.EHL)
Faculté des Sciences appliquées - école polytechnique / Brussels School of Engineering (Faculty of Applied Sciences) - Physique et Mathématique (unité ULB696)

The research focuses on acoustic remote sensing of the ocean and shallow water environments, physical modeling of musical instruments and ultrasound. The Environmental hydroacoustics lab (EHL) represents the main research activity. The lab specializes in the characterization of marine and aquatic environments and ecosystems primarily by acoustic means, covering a wide range of applications, e.g., geoacoustic characterization of sediment, acoustic tomography in coastal waters, monitoring of photosynthesis in marine habitats, ultrasonic imaging of biological communities, subseafloor profiling at very high resolution, study of sediment dynamics in rivers and estuaries, and ocean observatories. EHL designs experimental techniques and hardware for the in-situ acoustic remote sensing of ocean to very shallow freshwater environments, using sparse arrays of acoustic and environmental sensors, underwater mechatronics, and broadband sound sources or opportunity sources. The lab develops algorithms and software for data inversion, assimilation and fusion, using model-based signal processing, meta-heuristics, adjoint modeling and Bayesian filtering. The development of techniques for acoustic tomography and geoacoustic inversion, and the design and planning of experiments and operations at sea represent EHL core of activities and the principal source of funding since its creation in 2000. The lab is a participant to the 6th and 7th Framework Programmes of the European Union including European Seas Observatory Network Network of Excellence (ESONET), Integrated Project AQUATERRA and Ocean Acoustic Exploration IRSES (OAEx), and is supported by international and national institutions. The unit has a longstanding partnership with the Musical Instruments Museum (MIM), and has been involved in the development of the ''Labo du Son'' dedicated to the scientific popularisation of the physics of sound and instruments. The unit participates to the ANR French project CONSONNES on digital sound synthesis. The study of the physics of traditional African instruments in an ethnomusicological context at the Royal Museum for Central Africa (RMCA) is another example. The unit is involved in the use and development of acoustic particle velocity sensor both in air and underwater, collaborating with industrial partners including Microflown Tech. [The research focuses on acoustic remote sensing of the ocean and shallow water environments, physical modeling of musical instruments and ultrasound. The Environmental hydroacoustics lab (EHL) represents the main research activity. The lab specializes in the characterization of marine and aquatic environments and ecosystems primarily by acoustic means, covering a wide range of applications, e.g., geoacoustic characterization of sediment, acoustic tomography in coastal waters, monitoring of photosynthesis in marine habitats, ultrasonic imaging of biological communities, subseafloor profiling at very high resolution, study of sediment dynamics in rivers and estuaries, and ocean observatories. EHL designs experimental techniques and hardware for the in-situ acoustic remote sensing of ocean to very shallow freshwater environments, using sparse arrays of acoustic and environmental sensors underwater mechatronics, and broadband sound sources or opportunity sources. The lab develops algorithms and software for data inversion, assimilation and fusion, using model-based signal processing, meta-heuristics, adjoint modeling and Bayesian filtering. The development of techniques for acoustic tomography and geoacoustic inversion, and the design and planning of experiments and operations at sea represent EHL core of activities and the principal source of funding since its creation in 2000. The lab is a participant to the 6th and 7th Framework Programmes of the European Union including European Seas Observatory Network Network of Excellence (ESONET), Integrated Project AQUATERRA and Ocean Acoustic Exploration IRSES (OAEx), and is supported by international and national institutions. The unit has a longstanding partnership with the Musical Instruments Museum (MIM), and has been involved in the development of the ''Labo du Son'' dedicated to the scientific popularisation of the physics of sound and instruments. The unit participates to the ANR French project CONSONNES on digital sound synthesis. The study of the physics of traditional African instruments in an ethnomusicological context at the Royal Museum for Central Africa (RMCA) is another example. The unit is involved in the use and development of acoustic particle velocity sensor both in air and underwater, collaborating with industrial partners including Microflown Tech.]



coordonnées / contact details


LIST - Acoustique [LIST-Acoustics & Environmental hydroacoustics lab]
tel +32-2-650.67.69 / 474-53.54.64, fax +32-2-673.65.27, jhermand@ulb.ac.be
http://ehl.ulb.ac.be/
Campus du Solbosch, Bâtiment C, Niveau 5, Local C5.227A
CP165/51, avenue F.D. Roosevelt 50, 1050 Bruxelles

Pour en savoir plus, consultez le site web de l'unité.



responsable / head


Prof. Jean-Pierre HERMAND


composition / members


Lucia ARTUSI Mark ASCH Mohamed BERRADA Olivier CARRIERE Helber CARVALHO MACEDO Yong-xiang HUANG Lussac Prestes MAIA Matthias MEYER Arthur Ayres NETO Carlos Eduardo PARENTE RIBEIRO Ana Claudia de PAULA Isabel Cristina Vendramet PERES SIMOES Leandro PONSONI Joanne RANDALL Qun-yan REN Kerstin SIEMES Marcus V. da S. SIMOES Stéphanie WEISSER


projets / projects


EU-AquaTerra - Integrated Project (IP) of the 6th EC RTD Framework Programme (2005-2010) [EU-AquaTerra - Integrated Project (IP) of the 6th EC RTD Framework Programme (2005-2010)]
AquaTerra is an integrated project of the 6th EU RTD Framework Programme that aims to provide the scientific basis for an improved river basin management through a better understanding of the river-sediment-soil-groundwater system as a whole, by integrating both natural and socio-economics aspects at different temporal and spatial scales. [AquaTerra is an integrated project of the 6th EU RTD Framework Programme that aims to provide the scientific basis for an improved river basin management through a better understanding of the river-sediment-soil-groundwater system as a whole, by integrating both natural and socio-economics aspects at different temporal and spatial scales.]

CONSONNES - Contrôle des sons naturels et synthétiques - ANR-05-BLAN-0097-01 financé par l'Agence nationale de la Recherche (2005-2009) [CONSONNES - Contrôle des sons naturels et synthétiques - ANR-05-BLAN-0097-01 financé par l'Agence nationale de la Recherche (2005-2009)]
CONSONNES vise à rassembler autour du Laboratoire de Mécanique et d'Acoustique (UPR CNRS 7051, Marseille), de l'IRCAM (UMR 9912, Paris) et de l'ENST (LTCI, UMR 5141, Paris) des spécialistes nationaux et internationaux afin de faire avancer significativement la connaissance et les dispositifs expérimentaux dans le domaine du contrôle des sons produits par les instruments de musique acoustiques et leurs paradigmes numériques. Les instruments à vent et à cordes frottées ont un fonctionnement par essence non linéaire (auto-oscillations), le musicien fournissant de l'énergie principalement à très basse fréquence, et sont particulièrement concernés par la problématique contrôle. La description, la mesure et la modélisation de leur fonctionnement et de son résultat sonore soulèvent en effet des problèmes fondamentaux nécessitant pour être abordés efficacement l'association de compétences dans des domaines très divers. [The aim of the project CONSONNES is to assemble, at the Laboratoire de Mécanique et d'Acoustique (UPR CNRS 7051, Marseille), at IRCAM (UMR 9912, Paris) and at ENST (LTCI, UMR 5141, Paris), an international body of theoretical and experimental expertise in the area of control of both acoustic and virtual representations of musical instruments. Wind instruments and bowed string instruments in particular depend crucially on non-linear excitation mechanisms (self-oscillations), driven by low frequency energy supplied by a performer, and are directly linked to the problem of control. The development of theoretical models, and related numerical simulation methods, as well as the concomitant experimental work are of fundamental importance, and necessitate a broad interaction among researchers across a wide variety of disciplines. Consonnes is directed toward facilitating this communication.]

EU-ESONET - European Seas Observatory NETwork - Network of Excellence (NoE) cofunded by the European Commission in the 6th Framework Programme (2007-2011) [EU-ESONET - European Seas Observatory NETwork - Network of Excellence (NoE) cofunded by the European Commission in the 6th Framework Programme (2007-2011)]
ESONET stands for European Seas Observatory NETwork, networking institutions, persons, tools and know-how on deep sea observatories. It aims to promote the implementation and the management of a network of long-term multidisciplinary ocean observatories in deep waters around Europe. It wishes to define an organization ' with the necessary critical mass ' capable of gathering the resources of the participating institutes. The ultimate goal is to define durable solutions through a joint programme of activities. [ESONET stands for European Seas Observatory NETwork, networking institutions, persons, tools and know-how on deep sea observatories. It aims to promote the implementation and the management of a network of long-term multidisciplinary ocean observatories in deep waters around Europe. It wishes to define an organization ' with the necessary critical mass ' capable of gathering the resources of the participating institutes. The ultimate goal is to define durable solutions through a joint programme of activities. ]

EU-OAEx - Ocean Acoustic Exploration - Marie Curie International Research Staff Exchange Scheme (IRSES) of the 7th EC PEOPLE Framework Programme (2009-2012) [EU-OAEx - Ocean Acoustic Exploration - Marie Curie International Research Staff Exchange Scheme (IRSES) of the 7th EC PEOPLE Framework Programme (2009-2012)]
OAEx is an exchange project funded under the EU Marie-Curie initiative that aims at reinforcing links, exchanging experiences and methodologies between european and non-european partners in the field of ocean exploration using acoustics. Partnership: CINTAL - Centro de Investigaçao Tecnológica do Algarve, ULB - Université Libre de Bruxelles (Belgium), COPPE - Universidade Federal do Rio de Janeiro (Brasil), IEAPM - Instituto de Estudos do Mar Almirante Paulo Moreira (Brasil) and C-MARS Canadian Marine Acoustic Remote Sensing Facility (UVic, Canada). [OAEx is an exchange project funded under the EU Marie-Curie initiative that aims at reinforcing links, exchanging experiences and methodologies between european and non-european partners in the field of ocean exploration using acoustics. Partnership: CINTAL - Centro de Investigaçao Tecnológica do Algarve, ULB - Université Libre de Bruxelles (Belgium), COPPE - Universidade Federal do Rio de Janeiro (Brasil), IEAPM - Instituto de Estudos do Mar Almirante Paulo Moreira (Brasil) and C-MARS Canadian Marine Acoustic Remote Sensing Facility (UVic, Canada).]

HOLOFLOW - Advanced digital holographic microscopy and 4D imagery for applications in water technology and environmental monitoring (2009-2012) [HOLOFLOW - Advanced digital holographic microscopy and 4D imagery for applications in water technology and environmental monitoring (2009-2012)]
The HoloFlow project aims to develop and implement innovative 3D imaging digital holographic microscopes to detect, visualize, track and quantify microscopic particles in dynamic environmental fluids, specifically to monitor water quality on-line. Thanks to the use of partial-coherent light sources, the ULB patented technology largely improves the performance of digital holographic microscopy, which a is a decisive advantage for the foreseen commercial activities related to optical sensors for on-line water quality monitoring and in-situ deployment in coastal and marine environments. EHL is in charge of the in-situ system development and applications. [The HoloFlow project aims to develop and implement innovative 3D imaging digital holographic microscopes to detect, visualize, track and quantify microscopic particles in dynamic environmental fluids, specifically to monitor water quality on-line. Thanks to the use of partial-coherent light sources, the ULB patented technology largely improves the performance of digital holographic microscopy, which a is a decisive advantage for the foreseen commercial activities related to optical sensors for on-line water quality monitoring and in-situ deployment in coastal and marine environments. EHL is in charge of the in-situ system development and applications.]

GEOMARGEM - Estudos oceanográficos e geológico-geofísicos integrados nos ambientes de baías e de plataforma continental ao largo do Estado do Rio de Janeiro - Ciências do Mar - CAPES (2010-2013) [GEOMARGEM - Integrated oceanographic and geological-geophysical studies of bay and continental shelf environments off the state of Rio de Janeiro - Marine Sciences - CAPES (2010-2013)]
A área do projeto compreende os ambientes de baías costeiras, plataforma continental e talude superior da porçao norte da bacia de Santos e o sul da bacia de Campos, entre a ilha de Sao Sebastiao e o delta do Rio Paraíba do Sul. Tem como principal objetivo a compreensao, em diversas escalas temporais e espaciais, da evoluçao morfológica, ambiental, deposicional e temporal de ambientes de baias costeiras e de plataforma continental durante o Pleitoceno Superior-Holoceno, bem como a avaliaçao de parâmetros sedimentológicos, micropaleontológicos, geotécnicos e geo-acústicos. [The project area covers coastal bays, continental shelf and upper slope of the northern portion of the Santos Basin and southern Campos basin, between the island of Sao Sebastiao and the delta of Paraíba do Sul river. Its main objective is the understanding of various temporal and spatial scales of morphological, environmental, temporal and depositional evolution of environments during the Upper Pleistocene-Holocene, as well as the evaluation of sedimentological, micropaleontological, geotechnical and geoacoustic parameters.]

EU-SPLASHCOS - Submerged Prehistoric Archaeology and Landscapes of the Continental Shelf - European Cooperation in Science and Technology (COST) action TD0902 - Individuals, Societies, Cultures and Health (ISCH) domain (2009-2011) [EU-SPLASHCOS - Submerged Prehistoric Archaeology and Landscapes of the Continental Shelf - European Cooperation in Science and Technology (COST) action TD0902 - Individuals, Societies, Cultures and Health (ISCH) domain (2009-2011)]
SPLASHCOS is a four-year (2009-2013) research network funded by the European Commission under its COST program (Cooperation in Science and Technology) from 2009 to 2013. Its aim is to bring together archaeologists, marine geophysicists, environmental scientists, heritage agencies, and commercial and industrial organizations interested in researching, managing and preserving the archives of archaeological and palaeoclimatic information locked up on the drowned prehistoric landscapes of the European continental shelf, and to disseminate that knowledge to a wider public. [SPLASHCOS is a four-year (2009-2013) research network funded by the European Commission under its COST program (Cooperation in Science and Technology) from 2009 to 2013. Its aim is to bring together archaeologists, marine geophysicists, environmental scientists, heritage agencies, and commercial and industrial organizations interested in researching, managing and preserving the archives of archaeological and palaeoclimatic information locked up on the drowned prehistoric landscapes of the European continental shelf, and to disseminate that knowledge to a wider public.]

CORDOPHONES - Altérateurs de timbre des cordophones - projet Action 1, financement par le Ministère de la Politique Scientifique (2010-2013) [Timbre-modifying mechanisms in chordophones - projet Action 1, financement par le Ministère de la Politique Scientifique (2010-2013)]
Les altérateurs de timbre existent dans toutes les aires culturelles et dans toutes les familles organologiques. Un altérateur de timbre peut se définir comme un dispositif : 1. Dont l'effet est partie intégrante du timbre des sons produits par l'instrument ; 2. Qui n'est pas actionné directement par le musicien pendant le jeu ; 3. N'est pas indispensable à la production, la transmission ou l'amplification de la vibration, ni à l'équilibre mécanique de l'instrument. Les objectifs principaux de ce projet sont 1) l'analyse de lamanière dont l'altération est mécaniquement produite et l'effet acoustique et perceptif de l'altérateur 2) l'analyse de la manière dont les timbres altérés sont utilisés dans les répertoires musicaux et sont conceptualisés dans leur culture ; 3) la catégorisation les altérateurs et les timbresaltérés, dans le but d'intégrer les altérateurs dans les bases de données et les classifications des instruments de musique. Ce projet vise à une meilleure compréhension de la gestion du timbre et la reconnaissance de l'importance du timbre dans les recherches organologiques. [Timbre-modifying mechanisms in chordophones exist in every cultural area and in each organological family. A timbre-modifying mechanism is a mechanism: 1. whose effect is part of the timbre of the sounds produced by the instrument ; 2. that is not set in action by the player when the instrument is played ; 3. that is not needed for the production or the transmission of the vibration, nor the mechanical equilibrium of the instrument. This research aims: 1. to analyze how the timbre modification is mechanically produced and how the mechanism works, both acoustically and perceptually; 2. to analyze how the modified timbre is used in the musical repertoires and is conceptualized within its culture ; 3. to categorize and search for descriptors of timbre modifications, in order to include the timbre-modifiers into museum catalogues and databases. This project strives for a better understanding of the way men deal with the timbre of chordophones and the recognition of the timbre dimension's importance in organological researches.]

MER CALME - Monitorage de l'Environnement du Rail et Caractérisation Acoustique du Littoral Molénais et de son Ecosystème, Réseau International d'Observation Marine par Acoustique Sous Marine Discrète - GIS Europôler Mer (2010-2011) [MER CALME - Monitorage de l'Environnement du Rail et Caractérisation Acoustique du Littoral Molénais et de son Ecosystème, Réseau International d'Observation Marine par Acoustique Sous Marine Discrète - GIS Europôler Mer (2010-2011)]
Afin d'observer l'environnement marin de la manière la moins perturbante possible, les procédés utilisant l'acoustique sous marine discrète permettent la haute résolution temporelle, le suivi long terme et à moindre coût pour celui qui maitrise les outils de mesures et d'analyse des sons et qui peut corréler la production sonore d'un milieu avec son état. Le thème de l'océanographie acoustique est inclus dans le projet scientifique de l'axe 5 du GIS Europôler Mer. Cette recherche est menée en collaboration avec le trinôme brestois ENSIETA, SHOM et Océanopolis, et avec Pêches et Océans, Canada (MPO). [Afin d'observer l'environnement marin de la manière la moins perturbante possible, les procédés utilisant l'acoustique sous marine discrète permettent la haute résolution temporelle, le suivi long terme et à moindre coût pour celui qui maitrise les outils de mesures et d'analyse des sons et qui peut corréler la production sonore d'un milieu avec son état. Le thème de l'océanographie acoustique est inclus dans le projet scientifique de l'axe 5 du GIS Europôler Mer. Cette recherche est menée en collaboration avec le trinôme brestois ENSIETA, SHOM et Océanopolis, et avec Pêches et Océans, Canada (MPO).]

BC-IWBCS-ACOUST-OBS - Toward acoustic observatories for studying the dynamics of the ''Brazil Current - Intermediate Western Boundary Current'' system - CAPES (2010-2014) [BC-IWBCS-ACOUST-OBS - Toward acoustic observatories for studying the dynamics of the ''Brazil Current - Intermediate Western Boundary Current'' system - CAPES (2010-2014)]
Acoustic tomography is a powerful tool for oceanic data collection dueto its unique ability to sample three-dimensional synoptic fields.Moreover the acoustic tomography can provide time series of these fieldsat a low cost. This research explores how tomographic data can help forstudying the meso-scale dynamics of BC-IWBCS. The project developsalternative methods for providing synoptic data for operationaloceanography, including field estimates for initialization andassimilation into numerical models. [Acoustic tomography is a powerful tool for oceanic data collection dueto its unique ability to sample three-dimensional synoptic fields.Moreover the acoustic tomography can provide time series of these fieldsat a low cost. This research explores how tomographic data can help forstudying the meso-scale dynamics of BC-IWBCS. The project developsalternative methods for providing synoptic data for operationaloceanography, including field estimates for initialization andassimilation into numerical models.]



publications





theses


Carrière, Olivier, ''Sequential acoustic inversion for the characterization of shallow sea environments,'' Dir. Prof. Jean-Pierre Hermand, Faculté des Sciences - Physique, Laboratoire d'Hydroacoustique environnementale (EHL), U.L.B., Bruxelles, Belgium., 2011

Meyer, Matthias, ''The adjoint method of optimal control for the acoustic monitoring of a shallow water environment,'' Dir. Prof. Jean-Pierre Hermand, Faculté des Sciences appliquées/école polytechnique, Laboratoire d'Hydroacoustique environnementale (EHL), U.L.B., Bruxelles, Belgium., 2007

Hermand, Jean-Pierre, ''Environmentally-adaptative signal processing in ocean acoustics,'' Dir. Prof. Jean Ebbeni and Dr. William I. Roderick, Faculté des Sciences appliquées/école polytechnique, Service d'Optique et d'Acoustique, U.L.B., Bruxelles, Belgium., 1994



collaborations


Université Pierre et Marie Curie, Paris VI, Paris, France

Télécom Paris Tech, Paris, France

Institut Polytechnique de Grenoble, Grenoble, France

Laboratoire de Mécanique et d'Acoustique, Marseille, France

Service Hydrographique et Océanographique de la Marine, SHOM, Brest, France

Institut français de recherche pour l'exploitation de la mer (IFREMER), Brest, France

Delft University of Technology, Delft, Pays-Bas

KTH Royal Institute of Technology, Stockholm, Suède

NATO Undersea Research Centre, La Spezia, Italie

Università di Pisa, Pisa, Italie

Università Ca' Foscari, Venezia, Italie

FORTH Foundation for Research & Technology - Hellas, IACM Institute of Applied & Computational Mathematics, Heraklion (Crete), Grèce

Polish Academy of Sciences, Marine Institute of Oceanology, Sopot, Pologne

Office of Naval Research, Washington, Etats-Unis (USA)

University of California, Santa Barbara, Etats-Unis (USA)

Naval Postgraduate School, Monterey, Etats-Unis (USA)

Boston University, Boston, Etats-Unis (USA)

Hiroshima University, Graduate School of Engineering, Hiroshima, Japon

Universidade Federal do Rio de Janeiro, COPPE, Rio de Janeiro, Brésil

Universidade do Algarve, Faro, Portugal

Flinders University, School of Biological Sciences, Adelaide, Australie

University of Victoria, Victoria, Canada

University of Rhode Island, Kingston, Etats-Unis (USA)

Woods Hole Oceanographic Institution, Woods Hole, Etats-Unis (USA)

Scripps Institution of Oceanography UCSD, San Diego, Etats-Unis (USA)

Penn State University, Pennsylvania, Etats-Unis (USA)

Stennis Space Center, NRL, Stennis, Etats-Unis (USA)

Université du Québec, Institut des sciences de la mer, Rimouski, Canada

Ecole Polytechnique Fédérale de Lausanne, Electromagnetics and Acoustics Laboratory, Lausanne, Suisse

Universidade de Sao Paulo (USP), Oceanographic Institute, Sao Paulo, Brésil

Universidade Federal Fluminense, Departamento de Geologia - Laboratorio de Geologia Marinha (LAGEMAR), Niterói, Brésil

Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics, Shangai, Chine (Pékin)

Instituto de Estudos do Mar Almirante Paulo Moreira, Arraial do Cabo, Brésil

National Taiwan University, Taipei, Taiwan (Formose)

Harbin Engineering University, National Laboratory of Underwater Acoustic Technology, Harbin, Chine (Pékin)

Musée Royal d'Afrique Centrale (MRAC), Tervueren, Belgique

Musée des Instruments de Musique (MIM), Bruxelles, Belgique

Institute for Marine and Antarctic Studies, Division of Marine & Antarctic Futures, Hobart, Australie



prix / awards


Fellow of the IEEE (Institute of Electrical and Electronics Engineers), 2009 - Jean-Pierre HERMAND

Fellow of the ASA (Acoustical Society of America), 2007 - Jean-Pierre HERMAND

Best Paper Award at the ASA meeting, First Prize Winner, 2006 - Matthias MEYER

Best Paper Award at the ASA meeting, First Prize Winner, 2011 - Olivier CARRIERE

Best Poster Award at the OCEANS MTS/IEEE YEOSU Conference- Second Prize Winner, 2012 - Qun-yan REN



savoir-faire/équipements / know-how, equipment


Ocean-acoustic, geo-acoustic and oceanographic equipment. Facilities and equipment in architectural acoustics include anechoic and reverberant chambers.

The Environmental hydroacoustics lab (EHL) has expertise and experience in the design, development and field deployment of integrated sensor systems for environmental assessment, combining physical and biological oceanography, and acoustic remote sensing, and subsequent data processing. Staff and collaborators include specializations in geophysics, marine biology, signal processing, applied mathematics and ocean engineering.



mots clés pour non-spécialistes / keywords for non-specialists


acoustique exploration des océans problème inverse science de l'environnement traitement du signal


disciplines et mots clés / disciplines and keywords


Acoustique Archéologie et techniques des fouilles Automatique Environnement et pollution Ethnologie Géologie Mathématiques Musicologie Océanographie biologique Océanographie physique et chimique Optique Sédimentologie

acoustical oceanography acoustics acoustique passive archéologie sous-marine bioacoustics climate change contrôle digital holography microscopy ethnomusicologie geoacoustics géoacoustique geology geophysics global ocean observing system modèle de structure ocean engineering ocean observatories océanographie acoustique problème inverse psychoacoustique robotique sediment acoustics sediment transport synthèse synthèse par modèles physiques tomographie acoustique océanique traitement du signal vibrations non linéaires


codes technologiques DGTRE


Technologie de l'environnement, contrôle de la pollution