Comparison of three acoustics test fixtures for impulse peak insertion loss

Details

• Personal Author:
  Finan, Donald S. ; Flamme, Gregory A. ; Khan A ; Lankford J ; Meinke, Deanna K. ; Murphy, William J. ; Sondergaard J ; Stewart M
• Description:
  Acoustic test fixtures (ATF) for testing the impulse peak insertion loss (IPIL) of a hearing protector are described by American National Standard ANSI S12.42-2010. The self-insertion loss, ear simulator design (canals, microphone, and temperature), hardness of the area surrounding the pinna, and the anthropometric shape of the head has been specified in the standard. The IPILs of four protector conditions were evaluated with three ATFs during an outdoor field study using firearm noise. The Etymotic Research ER20 musicians' earplug and electronic (EB1 earplugs), the Peltor Tactical Pro earmuffs, and a combination of the TacticalPro and ER20 protectors were tested at 130, 150, and 170 dB peak sound pressure level with the Institute de Saint Louis heated and unheated fixture and the GRAS 45CB heated ATF. IPILs exhibited good agreement across all three fixtures for earplugs. Significant differences were observed between the fixtures for the earmuff-only condition. These differences were more evident for the double-protection condition. [Description provided by NIOSH]
• Subjects:
  Ear Hearing Laboratories Noise Noise, Occupational Occupational Health Personal Protective Equipment Protective Clothing Safety Sense Organs
• Keywords:
  Acoustic-vibration Acoustics Ear-protectors Hearing-level Hearing-protection Hearing-threshold Impulse-noise Laboratory-testing Noise-control Noise-exposure Noise-protection Protective-equipment Protective-measures Sound

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• ISSN:
  0001-4966
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  Colorado ; Illinois ; Michigan ; Ohio ; OSHA Region 5 ; OSHA Region 8
• 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:
  130
• Issue:
  4
• NIOSHTIC Number:
  nn:20039811
• Citation:
  J Acoust Soc Am 2011 Oct; 130(4)(2):2433-2434
• Contact Point Address:
  William J. Murphy, NIOSH, 4676 Columbia Parkway MS C-27, Cincinnati, OH 45226-1998
• Email:
  wjm4@cdc.gov
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Construction ; Manufacturing
• Peer Reviewed:
  False
• Part Number:
  2
• Source Full Name:
  Journal of the Acoustical Society of America
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:120c55130d86d78be8b9cb81e8c731b5c323d0affc4a5931e5796138b91bd67d767ed7d2afa35e7cc2a5ea148515f5e8615e3a11ab59e0a229f38c755821d4a0
• Download URL:
  https://stacks.cdc.gov/view/cdc/192904/cdc_192904_DS1.pdf
• File Type:
  [PDF - 56.17 KB ]