|Document ID (ISN)||111174|
|ISSN - Serial title
||0007-9952 - Cahiers de notes documentaires - Hygiène et sécurité du travail
|Convention or series no.
||Evaluating the in-situ acoustic attenuation of custom-moulded earplugs
||Evaluation de l'affaiblissement acoustique réel in situ des bouchons moulés individualisés [in French]|
||3rd quarter 2010, No.220, p.35-42. Illus. 19 ref.
||ND_2334-220-10.pdf [in French]
||The aim of this study was to compare the noise attenuation values of custom-moulded earplugs declared by suppliers with the values obtained in field measurements, taken from 63 workers of nine sites of various industrial sectors. Findings confirm the overestimation of manufacturer-declared acoustic attenuation values compared to in-situ measurements, ranging from 3 to 5dB for high frequencies to 8 to 10dB for medium and low frequencies. These results confirm that custom-moulded earplugs are relatively inefficient in attenuating low frequencies.
||noise level measurement; sound absorption; sound attenuation; earplugs
||labelling; personal sampling; equipment testing; comment on standard
||D - Periodical articles
||Noise, hearing and vibration
|Broad subject area(s)