Assessment of errors in sound pressure measurement in a large anechoic chamber

Authors

  • S.E. Keith Health Canada, Rad. Protection Bur., Ottawa, Ont., Canada
  • M.G. Davidson Health Canada, Rad. Protection Bur., Ottawa, Ont., Canada
  • S.H.P. Bly Health Canada, Rad. Protection Bur., Ottawa, Ont., Canada

Keywords:

acoustic intensity measurement, anechoic chambers, architectural acoustics, large acoustical anechoic chamber, Canadian Radiation Protection Bureau, flat-tipped fibreglass wedges, cut-off frequency, free-field performance, sound pressure measurements, 50 to 5000 Hz

Abstract

A large acoustical anechoic chamber has recently been put into operation at the Canadian Radiation Protection Bureau. The walls, floor and ceiling of the anechoic chamber are lined with flat-tipped fibreglass wedges designed for a cut-off frequency of 50 Hz. The interior (wedge tip to wedge tip) is 13 m long, 9 m wide and 8 m high. In order to create well-defined noise exposures and measurements of sound power and sound pressure in the chamber, its free-field performance must be quantified. This provides baseline estimates for errors in sound pressure measurements and a technique for error estimation as measurement configurations change. This paper describes characterization of the free field performance from 50 to 5000 Hz along the chamber axis. Implications for measurement uncertainties in the anechoic chamber are discussed

Additional Files

Published

1994-09-01

How to Cite

1.
Keith S, Davidson M, Bly S. Assessment of errors in sound pressure measurement in a large anechoic chamber. Canadian Acoustics [Internet]. 1994 Sep. 1 [cited 2024 Oct. 7];22(3):33-4. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/836

Issue

Vol. 22 No. 3 (1994)

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.