Document ID (ISN) | 27251 |
CIS number |
77-974 |
Year |
1975 |
Convention or series no. |
|
Author(s) |
Tobias J.V. |
Title |
Earplug rankings based on the protector-attenuation rating. |
Bibliographic information |
AD-A024 756/9WV, National Technical Information Service, Springfield, Virginia 22151, USA, Oct. 1975. 65p. 17 ref. Price: Photocopy US-$4.50/Microfiche US-$2.25. |
Abstract |
A method is proposed aimed at evaluating the effectiveness of ear protectors by a simple numerical rating instead of the rating in dB, which is liable to be misinterpreted. This protector-attenuation rating is based on a 3-digit classification of the mean attenuation and the standard deviation. The test procedure used is the ANSI method for the measurement of ear protectors at threshold. Attenuation spectra of 47 earplugs are reproduced and rated by the proposed classification. The results are tabulated and discussed. |
Descriptors (primary) |
sound attenuation; hearing conservation; earplugs |
Descriptors (secondary) |
USA; report; comparative study; equipment testing; classification; sound spectrum criteria |
Document type |
E - Books, reports, proceedings |
Subject(s) |
Noise, hearing and vibration
|
Broad subject area(s) |
|
Browse category(ies) |
Noise Hearing protection
|