Review of Measurement Methods for Hearing Protector Attenuation
- Author:
Atiqah Selamat1, Ailin Razali2
1
Author Information
1. 1 Department of Biotechnology, Kulliyyah of Sciences, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia 2 Department of ORL-HNS, Kulliyyah of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
- Publication Type:Journal Article
- Keywords:
ANSI 12.6, EPA 40 CFR 211, Hearing protection device attenuation, ISO 4869, Laboratory standard
- From:Malaysian Journal of Medicine and Health Sciences
2019;15(3):142-147
- CountryMalaysia
- Language:English
-
Abstract:
Abstract:The attenuation degree labelled on hearing protectors is based on internationally set standards. The attenuation is measurement in laboratories using methodology of real-ear attenuation at threshold (REAT), microphone in-real ear (MIRE) and acoustics test feature (ATF). The measured attenuation gap from the actual workplace is a problematic predicament. The conceptual review of how far these methods affect the gap could embark future researches. Therefore, a conceptual review of the conducted methodologies according to standards for attenuation which include Noise Reduction Rating (NRR) and Single Number Rating (SNR) are discussed in this paper. 23 papers from ProQuest, EBSCOhost and Google Scholar databases are chronologically reviewed. Summarily, the improved attenuation measurement methods will help close the gap between laboratory data and field performance and subsequently will better prevent Noise-Induced Hearing Loss. Most of the latest findings after year 2010 were in agreement with the studies in 2000 to 2009.
- Full text:11.2018my0464.pdf
