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The effect of speech and speech intelligibility on task performance

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The aim of this study was to find out what are the effects of three different sound environments on performance of cognitive tasks of varying complexity. These three sound environments were ‘speech', ‘masked speech' and ‘continuous noise'. They corresponded to poor, acceptable and perfect acoustical privacy in an open-plan office, respectively. The speech transmission indices were 0.00, 0.30 and 0.80, respectively. Sounds environments were presented at 48 dBA. The laboratory experiment on 36 subjects lasted for 4 h for each subject. Proofreading performance deteriorated in the ‘speech' ( p  
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Keywords: Annoyance; Distraction; Noise; Open-plan offices; Speech; Speech intelligibility

Document Type: Research Article

Affiliations: 1: Finnish Institute of Occupational Health, Laboratory of Ventilation and Acoustics, Lemminkäisenkatu 14–18 B, FIN-20520, Turku, Finland 2: University of Turku, Department of Psychology, FIN-20014, Turku, Finland

Publication date: September 15, 2006

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