Audibility of warning signals: methods to evaluate the combined effects of hearing protectors and hearing impairment
| Autor: | Ossen El Sawaf, Jean-Pierre Arz, nicolas grimault, Patrick Chevret |
|---|---|
| Přispěvatelé: | Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut national de recherche et de sécurité (Vandoeuvre lès Nancy) (INRS ( Vandoeuvre lès Nancy)), Grimault, Nicolas |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Internoise 2019 Internoise 2019, Jun 2019, madrid, Spain HAL |
| Popis: | International audience; Workers exposed to high noise levels are generally required to wear hearing protection devices (HPDs). For security reasons, it is important to evaluate whether the audibility of warning signals in noise is impeded when using HPDs, especially for hearing-impaired workers. The typical method to assess the effect of HPDs is to perform subjective experiments which require large populations with various degrees of hearing impairment to get statistically significant results. To ease the evaluation of the combined effects of HPDs and hearing impairment, two alternative methods are proposed. First, sound simulations have been used to reproduce the combined effects of impairment and HPDs to perform listening tests on normal hearing listeners. Qualitatively, the effects are successfully simulated. Second, a detection model has been developed to predict masked thresholds of warning signals in presence of background noise. Even though it overestimates the detrimental effects of HPDs, the model is qualitatively in agreement with the experimental data. 1 ossen.elsawaf@inrs.fr 2 jean-pierre.arz@inrs.fr 3 nicolas.grimault@cnrs.fr 4 patrick.chevret@inrs.fr Overall, these results should help to produce general recommendations for security purpose at work. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|