Measuring acoustic transmission loss using the 3-point method

Auteurs-es

  • S. Bilawchuk 4-9 Mechanical Engineering, University of Alberta, Edmonton, Alta., T6G 2G8, Canada
  • K.R. Fyfe 4-9 Mechanical Engineering, University of Alberta, Edmonton, Alta., T6G 2G8, Canada

Mots-clés :

Acoustic intensity measurement, Acoustic wave absorption, Anechoic chambers, Data acquisition, Microphones, Reverberation, Wave equations, Acoustic transmission loss measurement, Microphone measurements, Sound absorbing materials, Sound pressure levels, Standing wave impedance tube, Three point method

Résumé

Traditional measurement of transmission loss (TL) involved measuring sound pressure levels with and without the silencing element in place. As such, a 3-point method for measuring TL that can be performed entirely while the silencing element is in place is proposed. This 3-point method is shown to match the results of the traditional method very well. With this method, silencers can be tested for TL in field conditions for easier post-installation evaluation.

Fichiers supplémentaires

Publié-e

2002-12-01

Comment citer

1.
Bilawchuk S, Fyfe K. Measuring acoustic transmission loss using the 3-point method. Canadian Acoustics [Internet]. 1 déc. 2002 [cité 2 mai 2026];30(4):28-9. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1514

Numéro

Vol. 30 No. 4 (2002)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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