Sets out objective methods for predicting the attainability of, and subjective methods for assessing actual attainment of, both reliable speech communication and speech privacy in a given environment. Applies to the determination of speech intelligibility in auditoriums, classrooms, lecture rooms, conference rooms etc. and speech privacy conditions in offices, conference rooms, hotels, motels, dwellings and schools.
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AS 1639-1990
$18.00 $36.00
AS 3120-1990
$20.00 $40.00
AS 3112-1990
$31.00 $63.00
AS 3116-1990
$28.00 $57.00