Article Dans Une Revue Journal of the Acoustical Society of America Année : 2021

Modelling binaural unmasking and the intelligibility of speech in noise and reverberation for normal-hearing and hearing-impaired listeners

Résumé

This study investigated the effect of hearing loss on binaural unmasking (BU) for the intelligibility of speech in noise. Speech reception thresholds (SRTs) were measured with normal-hearing (NH) listeners and older mildly hearing-impaired (HI) listeners while varying the presentation level of the stimuli, reverberation, modulation of the noise masker, and spatial separation of the speech and noise sources. On average across conditions, the NH listeners benefited more (by 0.6 dB) from BU than HI listeners. The binaural intelligibility model developed by Vicente, Lavandier, and Buchholz [J. Acoust. Soc. Am. 148, 3305–3317 (2020)] was used to describe the data, accurate predictions were obtained for the conditions considering moderate noise levels [50 and 60 dB sound pressure level (SPL)]. The interaural jitters that were involved in the prediction of BU had to be revised to describe the data measured at a lower level (40 dB SPL). Across all tested conditions, the correlation between the measured and predicted SRTs was 0.92, whereas the mean prediction error was 0.9 dB.

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Dates et versions

hal-04083588 , version 1 (04-12-2024)

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Thibault Vicente, Jorg M. Buchholz, Mathieu Lavandier. Modelling binaural unmasking and the intelligibility of speech in noise and reverberation for normal-hearing and hearing-impaired listeners. Journal of the Acoustical Society of America, 2021, 150 (5), pp.3275-3287. ⟨10.1121/10.0006736⟩. ⟨hal-04083588⟩
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