| Document ID (ISN) | 111174 |
| CIS number |
10-0708 |
| ISSN - Serial title |
0007-9952 - Cahiers de notes documentaires - Hygiène et sécurité du travail |
| Year |
2010 |
| Convention or series no. |
ND 2334-220-10
|
| Author(s) |
Kusy A. |
| Title |
Evaluating the in-situ acoustic attenuation of custom-moulded earplugs |
| Original title |
Evaluation de l'affaiblissement acoustique réel in situ des bouchons moulés individualisés [in French] |
| Bibliographic information |
3rd quarter 2010, No.220, p.35-42. Illus. 19 ref. |
| Internet access |
ND_2334-220-10.pdf [in French]
|
| Abstract |
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. |
| Descriptors (primary) |
noise level measurement; sound absorption; sound attenuation; earplugs |
| Descriptors (secondary) |
labelling; personal sampling; equipment testing; comment on standard |
| Document type |
D - Periodical articles |
| Subject(s) |
Noise, hearing and vibration
|
| Broad subject area(s) |
Physical hazards
|
| Browse category(ies) |
Noise
|
