Progress on a rating system for hearing protector attenuation.

Details

• Personal Author:
  Franks, John R. ; Murphy, William J.
• Description:
  The cumulative distribution of A-weighted noise reduction (CDNRA) has been proposed as an alternative to the noise reduction rating for hearing protectors [W. J. Murphy and J. R. Franks, J. Acoust. Soc. Am. 105, 1131 (1999)]. Individuals' REAT data were A-weighted and summed across frequencies to determine the statistical distribution. The cumulative distribution of REAT data was fit to a combination of two logistic curves to capture the features of well-fit and poorly-fit hearing protectors. Previously, the CDNRA model was shown to yield Pearson's correlation coefficients of 0.99 or better. In this paper, the CDNRA theory will be reviewed and the method will be applied to the subject-fit data from six HPDs. The Bilsom UF-1 earmuff was rated at 23-dB attenuation. The V-51R was rated at 6-dB attenuation. The EP100 was rated at 7-dB attenuation. And the EAR Classic was rated at 23-dB attenuation. Subject-fit data from the EAR Express and Howard Leight Max earplugs will be presented as well. [Description provided by NIOSH]
• Subjects:
  Age Factors Aging Hearing Hearing Loss Noise Occupational Health Race Factors Safety Sense Organs Sex Characteristics Surveys And Questionnaires

  More +
• Keywords:
  Hearing-level; Hearing-loss; Hearing-acuity; Health-surveys; Age-factors; Age-groups; Information-retrieval-systems; Physical-examination; Racial-factors; Sex-factors; Audiological-testing; Audiometry
• ISSN:
  0001-4966
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DBBS - Division of Biomedical and Behavioral Sciences
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  106
• Issue:
  4
• NIOSHTIC Number:
  nn:20045239
• Citation:
  J Acoust Soc Am 1999 Oct; 106(4):2262
• Contact Point Address:
  William J. Murphy, Bioacoustics and Occupational Vibration Section, NIOSH, MS C-27, 4676 Columbia Pkwy., Cincinnati, OH 45226-1998
• Federal Fiscal Year:
  2000
• 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/248253/cdc_248253_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]