Objective Evaluation of Adjustments to the NAC Opera

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DOIResolve DOI: http://doi.org/10.4224/20374422
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TypeTechnical Report
Series titleInternal Report, Institute for Research in Construction, National Research Council Canada; Volume 591
Physical description39 p.
AbstractThis report describes the results of detailed objective acoustical measurements of changes to the orchestxa shell and sound absorbing curtains in the Opera of the National Arts Centre. Leaving one sound-absorbing curtain exposed was found to have negligible and barely measurable effects. The presence of the orchestra shell was found to change levels of both early- and latearriving sound energy at audience seats throughout the Opera. New positions of the orchestra shell produced only small acoustical changes with no clear pattern for overall improvement or degradation of the sound quality. Detailed analysis of the results demonstrated that much larger variations to the sound quality occurred in moving from one audience seating area to another. The report is written as a summary of the complete technical information that is contained in several appendices.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number2047
NPARC number20374422
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Record identifierc0c1f550-e63b-41c2-a766-a10c8829b8ea
Record created2012-07-23
Record modified2016-10-03
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