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. 16];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

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.