Prediction of the speech intelligibility index behind a single screen in an open-plan office

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DOIResolve DOI: http://doi.org/10.1016/S0003-682X(02)00003-8
AuthorSearch for: ; Search for:
TypeArticle
Journal titleApplied Acoustics
Volume63
IssueAugust 8
Pages867883; # of pages: 17
SubjectOpen-plan offices [cubicles]; Speech security
AbstractImproved acoustical privacy is the principal goal of the acoustical design of open plan offices. As the replacement of the Articulation Index (AI), the Speech Intelligibility Index (SII) can be used as a single-number measure of the speech privacy in open-plan offices. In this paper, a mathematical model of the speech propagation over single screens in a large open-plan office space is presented. The calculated effects of the office parameters, such as the screen height, ceiling and floor absorption, etc. on the SII behind the screen are discussed and are compared with measured results. To facilitate the practical use of the model, an empirical correction is derived from a wide range of ceiling tiles to provide values of the effective sound absorption of typical suspended ceilings in open offices. Compared to measured results, SII can be predicted with an RMS error of 0.03.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number44286
14900
NPARC number20378558
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Record identifier38fa9d43-a264-4c37-9c0d-7286e577d7a7
Record created2012-07-24
Record modified2016-05-09
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