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PUBLICATION 05/2024EL2019-004/P2023-174Simplified expressions of uncertainty for single number quantities in ISO 3382-3 (2022)The ISO 3382-3 (2022) standard defines single number quantities (SNQ) characterizing the spatial decay of speech (D2S, LpAS4m, rc) and of its intelligibility (rD). Relying on a Round-Robin test performed in a single office, the standard evaluate the precision…
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STUDY 01/2015EL2015-004Calculating speech noise exposure indicators in the tertiary sectorThrough this study, two focuses are being considered for making progress in reducing sound discomfort in open-plan offices. The first focus for progress relates to developing calculation and prediction tools making it possible, as of the design…
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PRESENTATION 02/2014NOETUDE/C2014-019Prediction of open plan office acoustics.Open plan office users complain of two annoyances due to noise. The first annoyance is lack of concentration and the second annoyance is the reduction of the confidentiality of conversations. The rapid prediction of the acoustic work environment…
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PRESENTATION 04/2015NOETUDE/C2015-050A hybrid method for open plan offices acoustics prediction using beam and particle tracing.Since open plan office users often complain of annoyance due to noise, it is critical to consider acoustic quality when designing such a workspace. This can be achieved with acoustic simulation methods, however, it is often difficult to obtain…
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PUBLICATION 10/2022EL2019-004/P2022-128Assessment of annoyance and cognitive fatigue of open-plan office occupants subjected to noise from two different activitiesAn open-plan office can be organised into zones, in which different activities can take place (focused individual work, collaborative work, phone communication...) The ISO 22955 (2021) standard recommends acoustic attenuation values between zones…
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PRESENTATION 03/2015NOETUDE/C2015-040Study of factors governing intelligibility in multi-speaker environments from an experiment with a large panel of listeners.The problem of intelligibility in multi-speaker environments is of great interest in different domains of application: the problem of audio communication in military operations engages the safety of people involved in conflicts; regarding…
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PRESENTATION 10/2015EL2015-004/C2015-101Noise annoyance in open-plan offices.It is a well-known fact that noise is a major source of discomfort in open-plan offices. The existing metrics, such as the equivalent sound level (LeqA), the reverberation time (RT), the speech spatial decay (D2S) or the speech transmission index (STI) are…
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PUBLICATION 04/2022EL2021-012/P2022-041/NS375Keys to reading the NF ISO 22955 standard (2021) "Acoustics - Acoustic quality of open office spaces"The international NF ISO 22955 standard will replace the French standard NF S31-199 (2016) in 2021. This document is intended for all potential users, i.e. all those involved in the planning, design, construction or fitting out of open office spaces…
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PRESENTATION 02/2015NOETUDE/C2015-023Acoustic of open spaces - toward a new French standard.Taking into account noise disturbance within office space construction and planning is now a major objective for the experts who participate to international standardization groups. In 2012, the international standard ISO 3382-3, specifying…
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PUBLICATION 06/2017EL2015-004/P2017-052/NS352Noise in open plan offices : acoustics and perception.Noise in open-plan offices is a major public health issue as revealed by indicators of sick leave and field surveys in France and abroad. For about a decade, the author has been conducting research in the Laboratory of Occupational Acoustics of…
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