Speech security thresholds for closed offices

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Conference18th International Congress on Acoustics: 04 April 2004, Kyoto, Japan
Subjectspeech security, speech intelligibility, privacy; Speech security
AbstractThis paper summarizes information from tests made to determine speech security thresholds for closed offices based on three thresholds: 1) threshold of audibility, where the speech sounds are just audible; 2) threshold of cadence, where the overheard sounds are just recognizable as speech possessing rhythm or cadence; and 3) threshold of intelligibility, where the overheard speech is just intelligible. Subjects listened to a large number of sentences representing a wide range of acoustical conditions, and repeated the words they could understand, or stated whether or not they could identify the speech or its cadence.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46883
NPARC number20378101
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Record identifierce6f2b4b-681d-4bf2-a8fe-9feba866e3e6
Record created2012-07-24
Record modified2016-05-09
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