Nadon, Vincent, Bonnet, Fabien, Bouserhal, Rachel E., Bernier, Antoine and Voix, Jérémie.
2021.
« Method for protected noise exposure level assessment under an in-ear hearing protection device: a pilot study ».
International Journal of Audiology, vol. 60, nº 1.
pp. 60-69.
Compte des citations dans Scopus : 5.
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Abstract
Objective - To properly measure the effective noise exposure level of workers with hearing protection devices (HPD), the use of in-ear noise dosimeters (IEND) is increasing. Commercial IENDs typically feature one in-ear microphone that captures all noises inside the ear and do not discriminate the residual noise in the earcanal from wearer-induced disturbances (WID) to calculate the in-ear sound pressure levels (SPL). A method to alleviate this particular issue with IENDs and calculate the hearing protection level on-site is therefore proposed. Design The sound captured by an outer-ear microphone is filtered with the modelled HPD transfer function to estimate the in-ear SPL, this way part of the WIDs mostly captured by the in-ear microphone can be rejected from the SPL. The level of protection provided by the earplugs can then be estimated from the difference between in-ear and outer-ear SPLs. The proposed method is validated by comparing the outcome of the proposed WID rejection method to a reference method. Study sample - The detailed methods are assessed on audio recordings from 16 industrial workers monitored for up to 4 days. Results - The merits of the proposed WID rejection approach are discussed in terms of residual SPL and hearing protection level estimation accuracy. Conclusions - Based on the findings, a method to integrate the proposed WID rejection algorithm in future IENDs is suggested.
| Item Type: | Peer reviewed article published in a journal |
|---|---|
| Professor: | Professor Bouserhal, Rachel Voix, Jérémie |
| Affiliation: | Autres, Génie mécanique |
| Date Deposited: | 26 Nov 2020 21:21 |
| Last Modified: | 28 Apr 2022 19:34 |
| URI: | https://espace2.etsmtl.ca/id/eprint/21555 |
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