Performance of sound restoration hearing protection in impulsive noise.

Details

• Personal Author:
  Murphy, William J.
• Description:
  Hearing protection devices (HPDs) are the principal means of protecting the hearing of a person against harmful levels of noise in highly impulsive noise environments. New HPDs which utilize sound restoration circuitry were measured using a mannequin to assess the performance of these protectors in response to small-arms weapons fire. The results for the peak reduction and attenuation were analyzed for both indoor and outdoor measurements. The performance of the protectors exhibited little dependence with level for impulses between 150 and 170 decibels. The passive performance for a single protector characterized the active performance for these high-intensity impulses. The results were also evaluated using the US Army AHAAH cochlear model. As the peak sound-pressure level underneath the different models of protectors increased, the estimated risk of hearing loss increased. [Description provided by NIOSH]
• Subjects:
  Acoustics Ear Laboratories Noise Noise, Occupational Occupational Health Personal Protective Equipment Protective Clothing Safety Sense Organs
• Keywords:
  Laboratory-testing; Impulse-noise; Acoustical-materials; Acoustical-measurements; Acoustics; Shock-waves; Sound; Sound-analyzers; Sound-propagation; Ear-protection; Ear-protectors; Hearing-protection; Noise-analysis; Noise-levels; Noise-sources
• ISSN:
  0001-4966
• Document Type:
  Text
• Funding:
  Interagency Agreement
• Genre:
  Abstract or Summary
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  120
• Issue:
  5
• NIOSHTIC Number:
  nn:20045237
• Citation:
  J Acoust Soc Am 2006 Nov; 120(5):3162
• Contact Point Address:
  William J. Murphy, Hearing Loss Prevention Team, National Institute for Occupational Safety and Health, 4676 Columbia Pkwy., MS C-27, Cincinnati OH 45226-1998
• Email:
  wjm4@cdc.gov
• Federal Fiscal Year:
  2007
• Peer Reviewed:
  False
• Source Full Name:
  Journal of the Acoustical Society of America
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/248251/cdc_248251_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]