Acoustical analysis of the Orpheum Theatre

Auteurs-es

  • J.S. Bradley Acoustics Lab., Inst. for Res. in Construction, Nat. Res. Council, Ottawa, Ont., Canada

Mots-clés :

architectural acoustics, Orpheum Theatre, Vancouver, audience seating area, over-stage reflectors, under-balcony electro-acoustic enhancement system, Fast Hadamard Transform techniques, impulse responses

Résumé

Extensive acoustical measurements and analyses were carried out in the Orpheum Theatre (Vancouver) for Aercoustics Engineering Ltd. as part of studies to develop plans for renovating the theatre. Measurements were made both on stage and for a number of locations in the audience seating area. Complete sets of measurements were repeated to evaluate the effects of the existing over-stage reflectors and an under-balcony electro-acoustic enhancement system. The measurements quantified problems associated with focusing effects and the different conditions found under a large balcony overhang. The measurements are compared with similar results found in other large halls. Measurements were made with our RAMSoft-II computer-based measurement system that uses an MLS signal and Fast Hadamard Transform techniques to calculate impulse responses. The impulse responses were filtered into octave bands and a dozen different acoustical quantities were calculated while in situ at each measurement position in the hall. For these measurements, three different source positions on stage and 15 receiver positions in the audience area of the hall were used

Fichiers supplémentaires

Publié-e

1994-09-01

Comment citer

1.
Bradley J. Acoustical analysis of the Orpheum Theatre. Canadian Acoustics [Internet]. 1 sept. 1994 [cité 23 juill. 2024];22(3):49-50. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/844

Numéro

Vol. 22 No. 3 (1994)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

Licence

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.