Uniform Derivation of Optimum Conditions for Speech in Rooms

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AuthorSearch for:
TypeArticle
Journal titleBuilding Research Note
ISSN0701-5232
Volume239
Pages18
Subjectspeech intelligibility; reverberation time; background noise; room acoustics; Speech security; intelligibilite; duree de reverberation; bruit ambiant; acoustique des salles
AbstractThe data from two previous studies of speech intelligibility in rooms are used to derive values of acoustical measures that would correspond to optimum conditions for speech in rooms. Optimum values of the A-weighted signal-to-noise ratio, the articulation index, the speech transmission index, and the 0.080-second useful-to-detrimental ratio were first determined as the point beyond which no increase in mean speech intelligibility score would be expected. Combinations of optimum reverberation time and background noise level were calculated from equal useful-to-detrimental ratio contours. These optimum reverberation time and background noise levels are presented as simple design contours.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierBRN-239
NRC number1624
NPARC number20378179
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Record identifier8afe9439-61b0-46bb-b283-389ad4403405
Record created2012-07-24
Record modified2016-05-09
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