Stimulus and transducer effects on threshold

Details

• Personal Author:
  Deiters KK ; Flamme, Gregory A. ; Geda K ; McGregor KD ; Murphy, William J. ; Stephenson, Mark R. ; Wyllys K
• Description:
  Objective: This study examined differences in thresholds obtained under Sennheiser HDA200 circumaural earphones using pure tone, equivalent rectangular noise bands, and 1/3 octave noise bands relative to thresholds obtained using Telephonics TDH-39P supra-aural earphones. Design: Thresholds were obtained via each transducer and stimulus condition six times within a 10-day period. Study sample: Forty-nine adults were selected from a prior study to represent low, moderate, and high threshold reliability. Results: The results suggested that (1) only small adjustments were needed to reach equivalent TDH-39P thresholds, (2) pure-tone thresholds obtained with HDA200 circumaural earphones had reliability equal to or better than those obtained using TDH-39P earphones, (3) the reliability of noise-band thresholds improved with broader stimulus bandwidth and was either equal to or better than pure-tone thresholds, and (4) frequency-specificity declined with stimulus bandwidths greater than one equivalent rectangular band, which could complicate early detection of hearing changes that occur within a narrow frequency range. Conclusions: These data suggest that circumaural earphones such as the HDA200 headphones provide better reliability for audiometric testing as compared to the TDH-39P earphones. These data support the use of noise bands, preferably ERB noises, as stimuli for audiometric monitoring. [Description provided by NIOSH]
• Subjects:
  Hearing Hearing Loss Hearing Loss, Noise-Induced Noise Occupational Health Safety Sense Organs
• Keywords:
  Audiological-testing Audiometers Author Keywords: Audiometry Equipment-reliability Hearing-acuity Hearing-impairment Hearing-loss Hearing-tests Humans Noise-induced-hearing-loss Noise-induced Hearing Loss Occupational Health Reliability

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• ISSN:
  1499-2027
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Proceedings
• Place as Subject:
  Michigan ; 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:
  54
• NIOSHTIC Number:
  nn:20045514
• Citation:
  Int J Audiol 2015 Feb; 54(S1):S19-S29
• Contact Point Address:
  Gregory A. Flamme, Department of Speech Pathology and Audiology, Western Michigan University, 1903 W. Michigan Ave., Kalamazoo, MI 49008
• Email:
  greg.flamme@wmich.edu
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  International Journal of Audiology
• Supplement:
  S1
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:141ad12f5424c28cb27f13cbf56decc054cf124384990fc0643ffbcfa4a8cb0f4b962325958c6ef55662a53e5cb608e25287c241697e1cf265d68bc48b99e97c
• Download URL:
  https://stacks.cdc.gov/view/cdc/200909/cdc_200909_DS1.pdf
• File Type:
  [PDF - 770.81 KB ]