Scientific activities

Our involvement in both scientific research and in the development of innovative solutions reflects our commitment to offer the highest service level to our customers.

Here are a few examples of our scientific activities :

European scientific research

Objective: determine the European standards for noise reducing devices

Since 1990, Jean-Pierre Clairbois manages the working group on noise reducing devices in the frame of the European Standardization Committee.

Beyond the acoustic performance, the working group also works on the stability, the safety and the durability of products.

Research and development

Thanks to our constant investment in research and development, we provide optimum answers to the specific needs of our customers.

This philosophy underlies our program of modelling and/or analysis of measurements surveys. Of course, all our proprietary developments are validated via on-site testing and published in scientific magazines.

Illustration :

AIRCRAFT NOISE MONITORING – TO INNOVATE BY CREATING A 100% RELIABLE INSTRUMENT

Scientific papers and publications

We publish regularly the outcome of our R&D, on the occasion of congresses or via specialized press.

Listes de nos publications :

  • Ir. J-P. CLAIRBOIS, PROF. M. GARAI, “The New framework of EN Standards for Traffic Noise Reducing Devices”, INTERNOISE 2003, JEJU, SOUTH KOREA.
    >> Article in PDF format
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, D. MEGANCK, A. THIBERT, “Prioritizing Road Noise Protections”, EURONOISE 2003, NAPLES, ITALY.
    >> Article in PDF format
  • Ir. J-P. CLAIRBOIS, PROF. M. GARAI, “The New framework of EN Standards for Traffic Noise Reducing Devices”, WESTPRAC 2003, MELBOURNE, AUTRALIA.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, D. MEGANCK, A. THIBERT, “Prioritizing Road Noise Protections”, INTERNOISE 2002, DEARBORN, USA.
  • Ir. J-P. CLAIRBOIS, “Control Measures: Noise Reducing Devices in Cities”. Invited presentation round Table, Proceedings. European Seminar on “Acoustic Pollution in Cities” 2002, Madrid, SPAIN.
    >> Article in PDF format
  • Ir. J-P. CLAIRBOIS, “Eficacia de los dispositivos reductores de ruido: física, modelos, validación, qué conclusiones podemos obtener al respecto?”. Plenary lecture, Proceedings. TecniAcustica 2001, Logroño, SPAIN.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, “Physics, models, validations, how are we able to conclude on these”. Invited paper, Proceedings. WESTPRAC 2000, Kumamoto, JAPAN.
  • Irs. V.TREFOIS, J-P. CLAIRBOIS, P. HOUTAVE, “Liege Airport: Noise monitoring system as part of global noise management policy”. Invited paper, Proceedings. INTERNOISE 2000, Nice, FRANCE.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, “Physics, models, validations, how are we able to conclude on these”. Invited paper, Proceedings. INTERNOISE 2000, Nice, FRANCE.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, A. KOELMANN, G. MOSDZIANOWSKI, “Cadastre of the whole road network of the Brussels region”. Invited paper, Proceedings. ASA/EAA/DEGA 1999, Berlin, GERMANY.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, V. TREFOIS, “Specific problems on the use of noise barriers on viaducts”. Proceedings. EURONOISE 98, Munich, GERMANY.
  • Irs. J-P. CLAIRBOIS, J. BEAUMONT, M. GARAI, G. SCHUPP, “A new in situ method for the acoustics performance of road traffic noise reducing devices”. Proceedings. ICA/ASA 98, Seattle, USA.
  • Ir. J-P. CLAIRBOIS, “Road and Rail anti-noise devices”, invited conference, BSMEE 98, Mons, Belgium.
  • Ir. J-P. CLAIRBOIS, “Ground Transportation noise”, acoustic course of the European Master on Architecture and Environment, University of Louvain (U.C.L.), 1998, Belgium.
  • Intelligibility in various rooms : comparing its assessment by (RASTI) measurement with a direct measurement procedure (Prof. A. TISSEYRE, A. MOULINIER, Y. ROUARD) – Applied Acoustics, vol 53 pp 179-191, 1998.
  • Ir. J-P. CLAIRBOIS, “Ground and Air transportation noise”, invited conference, Shangai University 97, Shangai, China.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, N. NICOLAS, “Specific designs of noise barriers for trains”, part II : “In situ verification of effectiveness”. Proceedings. Westprac 97, Hong Kong.
  • Irs. P. HOUTAVE, J-P. CLAIRBOIS, “Specific designs of noise barriers for trains”, part I : “Theoretical study of forms and materials”. Proceedings. Westprac 97, Hong Kong.
  • Ir. J-P. CLAIRBOIS, Prof. A. TISSEYRE, R. LAMORAL, A. MOULINIER, “A multifeature hall acoustics computer model”. Proceedings. Westprac 97, Hong Kong.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, V. TREFOIS “How multiple reflections can cause a degradation of performance for noise barriers”. Proceedings. Internoise 96, Liverpool, UK.
  • Prof. A. TISSEYRE, Speech intelligibility and the cocktail party effect in activity areas. Applied Acoustics Chine, Vol 15 N°2, March 1996.
  • Prof. A. TISSEYRE, “Multisource reverberation”, Ingéniorat F. BONNEFOUS, Université Paul Sabatier, 1996.
  • Prof. A. TISSEYRE, “Noise pollution control. Methods and techniques of noise management in very large cities. Application to Chinese cities”. Workshop on Sustainable Development and Urban Management in China – Beijing, 1995.
  • Prof. A. TISSEYRE, “Intelligibility : comparing a direct method with Rasti” Ingéniorat Y. ROUARD, Université Paul Sabatier, 1995.
  • Ir. J-P. CLAIRBOIS “Sound Absorptive Surfaces – Are they worthwhile?”, invited lecture seminar on Environmental Noise Barriers – A new Perspective, November 94. The Institution of Highways & Transportation, UK.
  • Irs. P. HOUTAVE, J-P. CLAIRBOIS, E. WEYERS, V. TREFOIS, “High-speed train noise abatement: important parameters and case study”. Proceedings. WORLD CONGRESS ON RAILWAY RESEARCH ’94, Paris, France.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, E. WEYERS, V. TREFOIS, “High-speed train noise abatement: important parameters and case study”. Invited paper, Proceedings. INTER-NOISE 94, Yokohama, Japan.
  • Irs. J-P. CLAIRBOIS, P. HOUTAVE, E. WEYERS, V. TREFOIS, “High-speed train noise abatement: important parameters and case study”. Technical papers. WESTPRAC V94, Seoul, Korea.
  • Ir. J-P. CLAIRBOIS, “High speed train noise”. Invited Seminar Korean High Speed Railway Company 1994, Seoul, Korea.
  • Prof. A. TISSEYRE, “Workshop on room acoustics and acoustic environment”, salon FAUST, 1994.
  • Ir. J-P. CLAIRBOIS “Noise Screenings in urban areas : the effectiveness of various designs”, invited lecture seminar on Road Traffic Noise Barriers, October 93. Transport Research Laboratory + Bradford University, UK.
  • Irs J-P. CLAIRBOIS, A. TISSEYRE, “Noise separation in a multisources environment (Road, rail and air traffic), the Villeneuve Saint Georges survey”, invited paper INTERNOISE ’93, LEUVEN, BELGIUM.
  • Irs J-P. CLAIRBOIS, P. HOUTAVE, E. WEYERS, “The level/time evolution of passing trains to evaluate the noise impact of T.G.V. Part 2 : Practical validation”, INTERNOISE’93, LEUVEN, BELGIUM.
  • Irs P. HOUTAVE, J-P. CLAIRBOIS, “The level/time evolution of passing trains to evaluate the noise impact of T.G.V. Part 1 : Mathematical development”, INTERNOISE ’93, LEUVEN, BELGIUM.
  • Prof. A. TISSEYRE, Prof. C. LEGROS, “A comparative study of criteria for the estimation of intelligibility, RASTI / direct method” L. FAIJET, DEA d’Acoustique, Université Toulouse III, 1993.
  • Ir. J-P. CLAIRBOIS, D. ALEGRE, “El Ruido : méthodos de prediccion, medidas correctora, experiencas”, Invited lecture Carreteras y medio ambiente, 92 – Las Palmas de Gran Canarias.
  • Ir. J-P. CLAIRBOIS, Dr. G. WATTS “CEN TC226/WG6 (Road Equipments anti-noise devices) : progress of the TG1 Acoustical Group”. FASE ’92, ZURICH, SWITZERLAND.
  • Ir. J-P. CLAIRBOIS “Dispositifs anti-bruits: cas typique en zones urbaines et périurbaines” conférence/invitée, Eurosymposium 1992, Nantes, France.
  • Prof. A. TISSEYRE, “Mastering the acoustic atmosphere in spaces attented by the public. Study of the cocktail effect”. Anne SINGLER, Ingéniorat, Université Paul Sabatier Toulouse, 1992.
  • Ir. J-P. CLAIRBOIS, “Stratégie de réduction de l’impact du bruit sur l’environnement”, Seminar on environmental problems, SRBII, 1991 Brussels, Belgium.
  • Ir. J-P. CLAIRBOIS, “Road and Rail Noise: Corrective Devices” seminar on acoustic barriers, I.Mech.E, 1990, London, United Kingdom.
  • Ir. J-P. CLAIRBOIS, “Highway noise: Corrective Devices”, Invited lecture, “Environnemental Noise in Urban Areas” Ajuntament de Barcelona/F.A.S.E. 1990 Barcelona, Spain.
  • Irs. T.C. OTTMER, J-P. CLAIRBOIS, “Schallschluckwand mit Durchblick, Durchgang und Schalldämpfer”. DAGA 1990, Wien, Austria.
  • Irs. M. VAN DER BEKEN, Prof. H. MYNCKE, J. NEMERLIN, L. LANOYE, D. DELVAUX, J-P. CLAIRBOIS, “Kontrolemethoden met behulp van speciale geluidsbron, Expertise methoden”. Studiedag geluidshinder veroorzaakt door het wegverkeer – KVIV 1990, Antwerpen, Belgium .
  • Ir. J-P. CLAIRBOIS, Dr. Ir. J. LECLERCQ, “Effets acoustiques des revêtements des tunnels routiers”, Technical press of Luxemburg’s Engineers, 1990, Luxembourg.
  • Irs. J-P. CLAIRBOIS, Prof. H. MYNCKE, J. NEMERLIN, L. LANOYE, D. DELVAUX, “In situ measurement of noise protection efficiency”. I.C.A. 1989, Belgrade, Yugoslavia.
  • Irs. M. VAN DER BEKEN, J-P. CLAIRBOIS, Prof. H. MYNCKE, “La problématique du T.G.V. en Belgique”. Assemblée Générale A.B.A.V., 1989, Leuven, Belgium.
  • Irs. J-P. CLAIRBOIS, D. ALEGRE, “Estudio de evaluacion del impacto acoustico debido a los trenes de alta velocidad”., Jornadas Nacionales de Acoustica, 1989, Zaragoza, Spain.
  • Irs. J-P. CLAIRBOIS, D. ALEGRE, “Dynamically view-through noise barrier with high absorbing characteristics”., Environmental Acoustics, FASE ’89, Zaragoza, Espagne.
  • Irs. D. ALEGRE, J-P. CLAIRBOIS, “The ends of tunnels and their access trenchs as noise sources in urban areas”. Environmental Acoustics, FASE ’89, Zaragoza, Spain.
  • Irs. J-P. CLAIRBOIS, D. ALEGRE, “El problema del ruido en las vias de circulacion en trinchera a cielo abierto y en los accesos a tunneles”. Simposio sobre impacto ambiental de las carreteras, 1988, San Sebastian, Spain.
  • Irs. J-P. CLAIRBOIS, D. LAGUERRE, “NS3: Noise source as a mean of in situ measurement of noise protection efficiency”. INTERNOISE 1988, Avignon, France.
  • Irs. J-P. CLAIRBOIS, T. OTTMER, “Schalldämpfung in Strassentunnelmündungen”. D.A.G.A. 1987, Aachen, Germany.

Congresses and working groups

  • Internoise (regular participation since 1982),
  • Airport Noise Symposium – Berkeley university – San DIEGO (02′),
  • Aircraft noise reduction (AAAF) – Arcachon (02′),
  • Daga (´87, ´90, 03′),
  • ICA (´86, ´89, ´92, ´98),
  • Fase (´89, ´90, ´92),
  • Comet II-programma:
  • Non-Stationary Signal Analysis (Leuven ´95),
  • Noise & Vibration From Rail Transport Systems (Lyon ´93),
  • WCRR (World Congress on Railway Research, Paris ´94),
  • EuroSymposium (Nantes ´92),
  • Euronoise (Lyon ´95, Munchen ´98, Naples 03′),
  • Wespac (Seoul ´94, Hong Kong ´97, Kumamoto 00′, Melbourne 03′),
  • Workshop on airports noise reduction – Lyon (02′),
  • Regional, national and international seminars concerning methods, legislations, and norms (Brussels, Wallonia, Flanders, IBN, CEN, ISO, I-INCE,…)