NDLI: Relationship Between Speech Intelligibility and Speech Comprehension in Babble Noise.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Fontan, Lionel Tardieu, Julien Gaillard, Pascal Woisard, Virginie Ruiz, Robert
Abstract	PURPOSE: The authors investigated the relationship between the intelligibility and comprehension of speech presented in babble noise. METHOD: Forty participants listened to French imperative sentences (commands for moving objects) in a multitalker babble background for which intensity was experimentally controlled. Participants were instructed to transcribe what they heard and obey the commands in an interactive environment set up for this purpose. The former test provided intelligibility scores and the latter provided comprehension scores. RESULTS: Collected data revealed a globally weak correlation between intelligibility and comprehension scores (r = .35, p < .001). The discrepancy tended to grow as noise level increased. An analysis of standard deviations showed that variability in comprehension scores increased linearly with noise level, whereas higher variability in intelligibility scores was found for moderate noise level conditions. CONCLUSION: These results support the hypothesis that intelligibility scores are poor predictors of listeners' comprehension in real communication situations. Intelligibility and comprehension scores appear to provide different insights, the first measure being centered on speech signal transfer and the second on communicative performance. Both theoretical and practical implications for the use of speech intelligibility tests as indicators of speakers' performances are discussed.
File Format	HTM / HTML
ISSN	10924388
Issue Number	3
Journal	Journal of Speech Language and Hearing Research
Volume Number	58
e-ISSN	15589102
Language	English
Publisher	American Speech-Language-Hearing Association
Publisher Date	2015-06-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Audiology
Content Type	Text
Resource Type	Article
Subject	Medicine Speech and Hearing Linguistics and Language

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