Extended speech intelligibility index for the prediction of the speech reception threshold in fluctuating noise

The extension to the speech intelligibility index (SII; ANSI S3.5-1997 (1997)) proposed by Rhebergen and Versfeld [Rhebergen, K.S., and Versfeld, N.J. (2005). J. Acoust. Soc. Am. 117(4), 2181-2192] is able to predict for normal-hearing listeners the speech intelligibility in both stationary and fluc...

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Published inThe Journal of the Acoustical Society of America Vol. 120; no. 6; p. 3988
Main Authors Rhebergen, Koenraad S, Versfeld, Niek J, Dreschler, Wouter A
Format Journal Article
LanguageEnglish
Published United States 01.12.2006
Subjects
Adolescent
Adult
Female
Humans
Male
Noise
Perceptual Masking
Speech - physiology
Speech Perception - physiology
Speech Reception Threshold Test
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Summary:The extension to the speech intelligibility index (SII; ANSI S3.5-1997 (1997)) proposed by Rhebergen and Versfeld [Rhebergen, K.S., and Versfeld, N.J. (2005). J. Acoust. Soc. Am. 117(4), 2181-2192] is able to predict for normal-hearing listeners the speech intelligibility in both stationary and fluctuating noise maskers with reasonable accuracy. The extended SII model was validated with speech reception threshold (SRT) data from the literature. However, further validation is required and the present paper describes SRT experiments with nonstationary noise conditions that are critical to the extended model. From these data, it can be concluded that the extended SII model is able to predict the SRTs for the majority of conditions, but that predictions are better when the extended SII model includes a function to account for forward masking.
ISSN:0001-4966
DOI:10.1121/1.2358008