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Measuring auditorium seat absorption

Davies, WJ, Orlowski, RJ and Lam, YW 1994, 'Measuring auditorium seat absorption' , Journal of the Acoustical Society of America, 96 (2) , pp. 879-888.

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Abstract

There is a need for a more accurate laboratory measurement method to predict auditorium seat absorption. The traditional method tends to overpredict the absorption of the exposed front and sides of seating blocks. An alternative reverberation chamber method was studied that involves the use of barriers to obtain realistic measurements of front and side absorption. This method was validated by comparing measurements of seats made in a reverberation chamber with in situ absorption data for the same seats, calculated from reverberation time measurements in ten auditoria with and without the seats present. The accuracy of the alternative method was satisfactory in all cases, although a severe lack of diffusion in two of the halls hindered the validation process. It was found that using a frequency-constant edge correction strip to account for side and front absorption could lead to significant errors in auditorium absorption prediction.

Item Type: Article
Additional Information: 1 PB503 J ACOUST SOC AMER
Uncontrolled Keywords: reverberation chamber measurements; theater chair absorption
Themes: Built and Human Environment
Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
Journal or Publication Title: Journal of the Acoustical Society of America
Publisher: Acoustical Society of America
Refereed: Yes
ISSN: 0001-4966
Depositing User: Dr W. J. Davies
Date Deposited: 16 Jul 2012 14:51
Last Modified: 20 Aug 2013 16:00
URI: http://usir.eprints.org/id/eprint/2430

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