|Document ID (ISN)||57821|
|ISSN - Serial title
||0018-7208 - Human Factors
|Convention or series no.
||Park M.Y., Casali J.G.
||A controlled investigation of in-field attenuation performance of selected insert, earmuff and canal cap hearing protectors
||Dec.1991, Vol.33, No.6, p.693-714. Illus. 26 ref.
||Attenuation data were collected from 40 industrial workers wearing four different hearing protection devices (HPDs) while at work. Statistical analyses indicated that the earplugs' attenuation significantly improved when training for proper fitting was used, whereas the earmuff and canal cap were relatively insensitive to the training effect. Results confirmed that laboratory protocols designed to simulate workplace influences on attenuation may not yield reasonable estimates of field protection performance of HPDs, particularly for earplugs. The study also demonstrated that the labelled manufacturers' noise reduction ratings substantially overestimated the actual field attenuation performance.
||hearing protection; sound attenuation; evaluation of equipment
||earplugs; earmuffs; comparative study; statistical evaluation; field tests
||D - Periodical articles
|Country / State or Province||USA|
|Broad subject area(s)