An Objective Methodology for Measuring Earmuff Hearing Protector Noise Attenuation

Paper #:
  • 2010-36-0502

Published:
  • 2010-10-17
Citation:
de Almeida Agurto, D., Gerges, S., and Arenas, J., "An Objective Methodology for Measuring Earmuff Hearing Protector Noise Attenuation," SAE Technical Paper 2010-36-0502, 2010, https://doi.org/10.4271/2010-36-0502.
Pages:
11
Abstract:
This article describes an objective methodology for measuring the noise attenuation of earmuff hearing protectors using as a reference the method known as microphone-in-real-ear (MIRE). The methodology implements the Insertion Loss (IL) paradigm, in which IL is measured using miniature microphones, specially designed to comply with ANSI and ISO standards for the MIRE technique. The results for a commercial hearing protector are compared with the subjective method known as real-ear-attenuation-at-threshold (REAT). Correction factors are included in the methodology to account for external effects such as physiological noise and bone conduction. The objective method predicted well the real protection of the earmuff and the proposed methodology showed lower standard deviation values than the REAT method.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$28.00
Mail
$28.00
Members save up to 42% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2011-04-12
Technical Paper / Journal Article
1990-02-01
Technical Paper / Journal Article
1990-02-01
Training / Education
2018-06-05