Salissou, Yacoubou, Panneton, Raymond et Doutres, Olivier.
2011.
« Three-microphone two-cavity method for measuring sound transmission loss in a modified impedance tube ».
[Article de conférence]. Canadian Acoustics = Acoustique Canadienne, vol. 39, nº 3.
pp. 16-17.
Compte des citations dans Scopus : 2.
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Résumé
The normal incidence sound transmission loss (nSTL) is an important indicator to assess the sound insulation property of acoustic materials. The apparatus consists of a finite length rigid walled impedance tube with circularly shaped and uniform inner cross-section. The tube features a loudspeaker at one end and a movable piston at the other end. The loudspeaker is used to generate a plane wave field in the impedance tube. There are two microphones flush mounted upstream the test sample and one microphone flush mounted on the rigid end. Next, a 20-mm thick step discontinuity seeing as a non-symmetrical sample is tested and compared to the standard 4M2L method and 3M-TMTC method. One can note that similar results are obtained between the 3M2L and 4M2L methods, however 4M2L is noisier compared to 3M2L.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Informations complémentaires: | Acoustics Week in Canada 2011, annual conference of the Canadian Acoustical Association |
| Professeur: | Professeur Doutres, Olivier |
| Affiliation: | Autres |
| Date de dépôt: | 29 oct. 2014 17:54 |
| Dernière modification: | 24 août 2017 19:09 |
| URI: | https://espace2.etsmtl.ca/id/eprint/8817 |
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