Measuring acoustic transmission loss using the 3-point method

Authors

  • 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

Keywords:

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

Abstract

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.

Additional Files

Published

2002-12-01

How to Cite

1.
Bilawchuk S, Fyfe K. Measuring acoustic transmission loss using the 3-point method. Canadian Acoustics [Internet]. 2002 Dec. 1 [cited 2025 Feb. 15];30(4):28-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1514

Issue

Vol. 30 No. 4 (2002)

Section

Proceedings of the Acoustics Week in Canada

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