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Convention Paper

Detection of Localized Sound Leaks in Walls and Their Effects on the Speech Privacy (Security) of Closed Rooms

Authors: Bradley, John S.; Gover, Bradford N.

AES Convention 121 · Paper 6989 · October 2006

Abstract

A new speech privacy measurement procedure accurately indicates the degree of speech privacy at individual listening locations outside of a closed room, including near localized weak spots. To investigate the importance of various defects (such as penetrations, electrical outlets), they were introduced into a test wall dividing two reverberation rooms. For each configuration of the wall, the following sound transmission measurements were made from one room to the other: i.) a standard transmission loss test, ii.) the new speech privacy measurement procedure, and iii.) impulse response measurements to a highly-directional spherical microphone array. The results indicate the degree to which the various defects affect the speech privacy conditions, and the extent to which they are detectable by the various methods.

Details

Published in
AES Convention 121
AES Convention
121
Paper number
6989
Publication date
October 6, 2006
Session subject
Room and Architectural Acoustics
Affiliation
National Research Council Canada (See document for exact affiliation information.)
Type
Convention Paper