Speech audiometry in noise: Signal noise ratio loss values according speech signal level presentation in normal hearing subjects.

Eur Ann Otorhinolaryngol Head Neck Dis

Department of Otology and Neurotology, University Hospital Center of Lille, University of Lille, 59000 Lille, France. Electronic address:

Published: August 2025


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Article Abstract

Objective: This study aimed to evaluate the psychometric function curve and signal-to-noise ratio (SNR) loss values during the "Vocale Rapide dans le Bruit" (VRB) speech-in-noise test with speech level presentations at 65dB SPL (VRB65) and 45dB SPL (VRB45) in normal-hearing subjects.

Materials And Methods: Adult normal-hearing subjects underwent an audiological evaluation including tympanometry, pure-tone audiometry, speech recognition threshold in silence and speech-in-noise audiometry following the recommended protocol (65dB SPL, VRB), followed by a second series of tests with a lower sentence presentation level (45dB SPL, VRB).

Results: Among the 29 normal-hearing subjects, there was no significant variation in the psychometric function curves or SNR loss values for VRB or VRB.

Conclusion: The "Vocale Rapide dans le Bruit" speech-in-noise test is a relevant tool for assessing auditory difficulties in noisy environments. In normal-hearing subjects, presenting sentences at different intensity levels did not show a significant difference. This was an essential prerequisite for its use at various signal presentation levels, which could enable the evaluation of the functional state of high- and low-threshold auditory nerve fibers. This, in turn, would refine clinical diagnosis and improve the management of hearing disorders associated with hidden hearing loss.

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http://dx.doi.org/10.1016/j.anorl.2025.06.008DOI Listing

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