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STUDY 01/2013ET2013-001Characterising the acoustic properties of complex walls and panels and influence on noise in industrial premisesThe objective of these research activities in the field of room acoustics is to develop tools useful for reducing exposure to noise. Continuing the collaboration with the Université de Lorraine (formerly the Unité Mixte “Acoustique des Parois…
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PRESENTATION 02/2014NOETUDE/C2014-021Determination of acoustic characteristics of pneumatic exhaust silencers: Proposal for a new standard.This paper describes the development of a standard test procedure for assessing the acoustical efficiency of pneumatic exhaust silencers. Manufacturers wish to take profit of existing ISO 6358 test benches to characterize also the acoustical…
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PRESENTATION 03/2016ET2013-001/C2016-051Physically-based numerical sound propagation modeling in rooms with non-flat walls.Nowadays, accurate sound propagation modeling is one of the main research axes in room acoustics. Many numerical methods exist, each with their own benefits. Nevertheless, compromises in terms of accuracy, size of the studied domain or frequency…
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PUBLICATION 07/2023EL2017-013/P2023-112/ns383Development of a comfort evaluation protocol for earplugs in the workplaceIn France, many workers are exposed daily to noise levels that are potentially dangerous for hearing. For prevention purposes, individual hearing protectors are in widespread use. The comfort of the earplugs directly affects the effective protection…
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PUBLICATION 11/2022EL2017-016/P2022-149An alternative method for measuring sample pump pulsation.Sampling pumps are an essential part of the chemical exposure assessment process, as the flowrate is used for the calculation of the atmospheric concentration of pollutants. Flowrate stability is important for its contribution to uncertainty…
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PUBLICATION 12/2010C.1/1.059/P2010-127/NS289Risk assessment for the hearing of the operators of call centers and prevention solutions.The risk assessment for the hearing of the operators of call centers has required the development of a new methodology using specific measuring equipment in accordance with ISO 11904-2 published in 2006. This apparatus, based on a head and torso…
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