articulation index


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articulation index

[är‚tik·yə′lā·shən ′in‚deks]
(psychology)
An indication of the percentage of speech sounds that would be heard correctly when heard without a context.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Speech Privacy Privacy Index (PI) 100%-95% Confidential Speech Privacy PI = (1 - AI) (AI = Articulation Index) 95%-80% Nonintrusive (Normal, Open Plan Office) Speech Privacy 80%-60% Poor Speech Privacy <60% Complete Lack of Privacy Degree of privacy needed depends on room use: Knowledge workers need nonintrusive privacy to work effectively, managers need confidential, etc.
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