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The effect of exposure duration on the subjective discomfort of aircraft cabin noise.

Authors
  • Huang, Yu1
  • Jiang, Weikang1
  • 1 a Institute of Vibration Shock and Noise, School of Mechanical Engineering , Shanghai Jiao Tong University , Shanghai , P.R. China. , (China)
Type
Published Article
Journal
Ergonomics
Publication Date
Jan 01, 2017
Volume
60
Issue
1
Pages
18–25
Identifiers
DOI: 10.1080/00140139.2016.1170890
PMID: 27016173
Source
Medline
Keywords
License
Unknown

Abstract

The time dependency for subjective responses to noise has been a controversial question over many years. For durations of up to 10 min, the discomfort produced by three levels of noise (ie 60, 70 and 80 dBA) was investigated in this experimental study to determine the relation of discomfort to the time duration of noise. The rate of increase in discomfort with increasing duration was 1.5 dB per doubling of exposure duration, whereas it is currently assumed to be 3 dB per doubling of exposure duration. The sound dose level (SDL) was proposed to predict the discomfort caused by noise of long duration. The combination of SDL and vibration dose value (VDV) provided more consistent estimates of the equivalent comfort contours between noise and vibration over durations from 2 to 32 s than the combination of sound exposure level and VDV or that of sound pressure level and r.m.s. acceleration. Practitioner Summary: The discomfort produced by noise of long duration can be well predicted from a new definition of sound dose level, where the discomfort increases at 1.5 dB per doubling of exposure duration.

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