The value of a kurtosis metric in estimating the hazard to hearing of complex industrial noise exposures

Details

• Personal Author:
  Davis RI ; Hamernik RP ; Qiu W
• Description:
  A series of Gaussian and non-Gaussian equal energy noise exposures were designed with the objective of establishing the extent to which the kurtosis statistic could be used to grade the severity of noise trauma produced by the exposures. Here, 225 chinchillas distributed in 29 groups, with 6 to 8 animals per group, were exposed at 97 dB SPL. The equal energy exposures were presented either continuously for 5 d or on an interrupted schedule for 19 d. The non-Gaussian noises all differed in the level of the kurtosis statistic or in the temporal structure of the noise, where the latter was defined by different peak, interval, and duration histograms of the impact noise transients embedded in the noise signal. Noise-induced trauma was estimated from auditory evoked potential hearing thresholds and surface preparation histology that quantified sensory cell loss. Results indicated that the equal energy hypothesis is a valid unifying principle for estimating the consequences of an exposure if and only if the equivalent energy exposures had the same kurtosis. Furthermore, for the same level of kurtosis the detailed temporal structure of an exposure does not have a strong effect on trauma. [Description provided by NIOSH]
• Subjects:
  Animals Environmental Exposure Hearing Loss Laboratories Noise Noise, Occupational Occupational Health Risk Assessment Risk Factors Safety
• Keywords:
  Acoustic-trauma Acoustics Auditory-system Environmental-exposure Etiology Exposure-limits Hearing-loss Laboratory-animals Monitors Noise-exposure Physiopathology Risk-analysis Risk-factors Sound Statistical-analysis Workers

  More +
• 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:
  133
• Issue:
  5
• NIOSHTIC Number:
  nn:20043530
• Citation:
  J Acoust Soc Am 2013 May; 133(5):2856-2866
• Email:
  wei.qiu@plattsburgh.edu
• Federal Fiscal Year:
  2013
• 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:a837cbdd618cae850b7b2f2b2305121fcf73d04052b42333386c48d452714dc279ef6a47cf16ee24bdc3d155cd873795b8efdd343a9a2e7fac6bf1b86290b054
• Download URL:
  https://stacks.cdc.gov/view/cdc/195409/cdc_195409_DS1.pdf
• File Type:
  [PDF - 1.61 MB ]