Industries

power plant

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The operation of energy production sites (wind, hydroelectric or biomass) causes noise pollution for the neighbours. However, within the framework of the legislation, the sound activities linked to the operation of a site must not emerge in relation to the pre-existing soundscape. To establish the criteria for maximum permissible sound levels, day and night, most acousticians carry out a measurement campaign. Nevertheless, the acoustic measurements are incomplete since they do not take into account the intrinsic variability of the soundscapes and are studied according to an approach which does not take into account all the values observed. Therefore, these measures are not only not replicable, but also lead to scaling maximalist and expensive solutions. Thanks to the Urbanistic Noise Map® (project developed with ADEME), we establish the criteria for maximum acceptable sound levels according to a database of tens of thousands of similar sites to optimize acoustic solutions and not to depend on measures that cannot be replicated in the event of an appeal. Finally, our method takes into account all sound sources and levels, which in some cases makes it possible to guarantee the operation of wind farms and to calibrate the restraints differently.

Factory and industrial hall

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The operation of factories and industrial halls raises two essential acoustic points of vigilance: nuisance to neighbors and the health of people working on site. With regard to the nuisance to the neighbours, according to the legislation, the noise activities linked to the operation must not emerge from the pre-existing noise landscape. Thanks to the Urbanistic Noise Map® (project developed with ADEME), we establish the criteria for maximum permissible sound levels day and night, according to a database of tens of thousands of similar sites to optimize acoustic solutions and not to depend on non-replicable measures in the event of an appeal. As for the question of the hearing health of people working on site, we have developed a digital model center which allows us to model, from the design stage, the sound impact of machines in operation on the environment and people. Thus, we are able to anticipate, integrate and optimize acoustic solutions for buildings, less costly for the contracting authority and respectful of people's health in accordance with the regulations on noise at work.

Laboratories test benches

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As part of the design and construction of laboratories and test benches with or without acoustic properties, the choice of materials and shapes of the rooms are essential to comply with metrology protocols. For 40 years, thanks to our digital model center which uses a finite element meshing technique, we take into account with finesse these different parameters for an optimal design of anechoic or semi-anechoic rooms, reverberation rooms, chassis dynamometers or even a booster test lap.

Product developments

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As part of the development of products with acoustic properties, manufacturers must carry out laboratory experiments to verify the properties of their products and obtain certification. The number of these laboratories being limited, the experiments can be costly and the delays spread out. Thanks to our digital mock-up center, we are able to digitally reproduce these experiments in order to reduce costs and product development times for manufacturers. Thus, they can carry out numerous experiments, according to several parameters and scenarios, which we can help to develop, without having to resort to traditional laboratories during the test phase.