Complex noise exposures: an energy analysis.

Details

• Personal Author:
  Ahroon WA ; Davis RI ; Hamernik RP
• Description:
  A series of experiments was conducted to investigate the hazard to hearing from complex noise exposures to determine if the equal energy hypothesis can unify the results from combinations of continuous noise and moderate levels of impact noise exposures of a type that often occur in industrial work environments. Chinchillas were exposed for 5 days to one of several different noise exposure conditions consisting of either octave bands of noise, impact alone, or combinations of impact and octave bands of noise. The noise induced trauma was measured by monitoring the evoked potential of hearing thresholds and cochleograms. For sound exposure levels which produce less than approximately 10 decibels (dB) of permanent threshold shift, or 5% total sensory cell loss, equal energy exposures tended to produce equivalent effects on hearing. There was a range of at least 10dB in the sound exposure level (SEL) parameter where hearing loss from equal energy exposures at a particular SEL could be exacerbated by increasing the repetition rate of the impacts or by the addition of a Gaussian low level noise. The exacerbation of trauma from the addition of a Gaussian continuous noise was dependent on the spectrum of that noise. [Description provided by NIOSH]
• Subjects:
  Ear Hearing Hearing Loss Hearing Loss, Noise-Induced Laboratories Noise Occupational Health Safety Sense Organs
• Keywords:
  NIOSH-Publication; NIOSH-Grant; Noise-induced-hearing-loss; Noise-exposure; Hearing-loss; Laboratory-animals; Ear-disorders; Sensory-thresholds; Hearing-threshold
• ISSN:
  0001-4966
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  New York ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  93
• Issue:
  2
• NIOSHTIC Number:
  nn:00213552
• Citation:
  J Acoust Soc Am 1993 Feb; 93(2):997-1006
• Contact Point Address:
  Communicative Disorders & Scis Research Foundation of Suny P O Box 9 Albany, N Y 12201
• Federal Fiscal Year:
  1993
• Performing Organization:
  Plattsburgh State University, New York
• Peer Reviewed:
  True
• Start Date:
  19860301
• Source Full Name:
  Journal of the Acoustical Society of America
• End Date:
  20130514
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/247789/cdc_247789_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]