Uncertainties in noise-induced permanent threshold shift
report
This report discusses the assessment of noise-induced permanent thresholdshift and of noise-induced hearing handicap in populations exposed to occupational noise as well as in individual occupational noise-exposed subjects. It is focused on methods for the allocation of hearing threshold level shifts to noise and to age in individual subjects, giving special attention to ISO 1999 'Acoustics: determination of occupational noise exposure and estimation of noise-induced hearing impairment'. After conclusions have been drawn, definitions of hearing threshold levels and noise-induced permanent threshold shifts are presented. Where possible the definitions given in ISO 1999 have been duplicated, in specific cases with slight modifications that restrict the definitions to occupational noise exposure.
Topics
TNO Identifier
167258
ISBN
90-6743-406-X
Publisher
TNO
Collation
50 p.
Place of publication
Leiden