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Document ID (ISN)56343
CIS number 91-1327
ISSN - Serial title Cahiers de notes documentaires - Sécurité et hygiène du travail
Year 1990
Convention or series no.
Author(s) Damongeot A., Lataye R., Kusy A.
Title Noise attenuation due to double hearing protection (earmuffs plus earplugs)
Original title Affaiblissement acoustique apporté par une double protection de l'ouïe (serre-tête + bouchons d'oreille) [in French]
Bibliographic information 3rd Quarter 1990, No.140, Note No.1789-140-90, p.557-562. Illus. 11 ref.
Abstract The utilisation of double hearing protection (earmuffs plus earplugs) may be necessary in particularly noisy environments. Global attenuations (ISO index: ENR80) given by 32 models of earmuffs and earplugs, used alone or in combination, are presented, based on the literature and tests performed by INRS. In addition, a simple empirical formula was established, relating the global attenuation ENR80 given by the combined protectors to the attenuation given by each one of them. This formula can be useful for assessing the noise attenuation due to any combination of earmuffs and earplugs used in France.
Descriptors (primary) hearing protection; noise; earmuffs; exposure evaluation; earplugs; noise control
Descriptors (secondary) threshold limit values; sound attenuation; evaluation of equipment
Document type D - Periodical articles
Country / State or ProvinceFrance
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Exposure evaluation
Hearing protection