Robin, Olivier, Berry, Alain, Doutres, Olivier et Atalla, Noureddine.
2014.
« Measuring sound absorption coefficient under a synthesized diffuse acoustic field ».
In NoiseCon' 14: Advancing the Technology and Practice of Noise Control Engineering (Fort Lauderdale, FL, USA, Sept. 8-10, 2014)
pp. 848-855.
Springfield, IL, USA : Institute of Noise Control Engineering of the United States of America.
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Résumé
This paper proposes an experimental method to estimate the absorption coefficient of absorbing materials using a synthesized diffuse acoustic field in free-field conditions. Comparisons made with the standard reverberant room method and numerical simulations, using the transfer matrix method, show that the proposed approach do not exhibit non-physical trends of the reverberant room method and provide absorption coefficients in good agreement with those obtained by simulations for a laterally infinite material. Smaller samples than those required by standards can be used, together with a simplified implementation of absorption measurements under a precise and repeatable diffuse acoustic field.
| Type de document: | Compte rendu de conférence |
|---|---|
| Professeur: | Professeur Doutres, Olivier |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 09 avr. 2015 15:07 |
| Dernière modification: | 23 nov. 2017 19:40 |
| URI: | https://espace2.etsmtl.ca/id/eprint/9471 |
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