ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)43966
CIS number 85-670
ISSN - Serial title 0391-2825 - Rivista di medicina del lavoro ed igiene industriale
Year 1984
Convention or series no.
Author(s) Cassano F., Elia G.
Title Possibilities and limitations of individual hearing protection: insert-type hearing protectors
Original title PossibilitÓ e limiti della protezione acustica individuale: gli inserti auricolari [in Italian]
Bibliographic information Apr.-June 1984, Vol.8, No.2, p.95-108. Illus. 11 ref.
Abstract The noise reduction capacity of 3 types of earplug (glass down, plastic foam, rigid) was tested against 12 types of industrial noise (sound level range 92.9-111.9dB(A)) at 9 frequencies (range: 125-8000Hz). The noise attenuation power of the rigid earplug was significantly less than that of the other two types. The reduction in perceived noise level rarely exceeded 15dB(A) for any of the earplugs.
Descriptors (primary) hearing protection; earplugs; sound attenuation; noise
Descriptors (secondary) comparative study; evaluation of equipment
Document type D - Periodical articles
Subject(s) Noise, hearing and vibration
Broad subject area(s)
Browse category(ies) Noise
Hearing protection