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Document ID (ISN)33093
CIS number 80-386
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1979
Convention or series no.
Author(s) Thunder T.D., Lankford J.E.
Title Relative ear protector performance in high vs low sound levels.
Bibliographic information Dec. 1979, Vol.40, No.12, p.1023-1028. 13 ref.
Abstract The attenuation of a commercial earplug was determined in 5 subjects with normal hearing and 5 with impaired hearing. The impaired-hearing group yielded significantly less attenuation than normal subjects. Since the measuring sound intensity level was high for the subjects with impaired hearing and low for the normal subjects, a threshold procedure using normal subjects as presented in American standard ANSI S3.19-1974 may overestimate the actual attenuation of ear protectors in most noisy environments. Reasons for the differences found are discussed.
Descriptors (primary) noise level; earplugs; sound attenuation
Descriptors (secondary) evaluation of equipment; audiometric tests; hearing loss; individual variables
Document type -
Subject(s) Noise, hearing and vibration
Broad subject area(s)
Browse category(ies) Noise
Hearing protection