Alarm vigilance in the presence of 80 dBA pink noise with negative signal-to-noise ratios

Buddhika KARUNARATHNE, Richard H. Y. SO, Chi Shan KAM

Research output: Chapter in Book/Report/Conference proceedingChapters

Abstract

Workers often have to be vigilant for critical auditory signals in the presence of loud noise. However this phenomenon appears to have received relatively less attention especially when the signal-to-noise ratios (SNRs) are less than unity (or –ve dB). In this study we focus on alarm vigilance in the presence of loud pink noise (80dBA) and with SNR of -18, -21, -24 and -∞ dB. The results show that people with no known hearing impairments, were able to detect a 56dBA alarm in the presence of a noise level of 80dBA (i.e., a SNR of -24dB). The findings can help to establish threshold boundaries for audible alarm signal in the presence of loud noise. Copyright © 2014 by Taylor & Francis Group, LLC.
Original languageEnglish
Title of host publicationContemporary ergonomics and human factors 2014: Proceedings of the international conference on Ergonomics & Human Factors 2014, Southampton, UK, 7-10 April 2014
EditorsSarah SHARPLES, Steven SHORROCK
Place of PublicationLondon
PublisherTaylor & Francis
Pages443-449
ISBN (Electronic)9780429227288, 9781315765457
ISBN (Print)9781138026353, 1138026352
DOIs
Publication statusPublished - Apr 2014

Citation

Karunarathne, K., So, R. H. Y., & Kam, A. C. S. (2014). Alarm vigilance in the presence of 80 dBA pink noise with negative signal-to-noise ratios. In S. Sharples & S. Shorrock (Eds.), Contemporary ergonomics and human factors 2014: Proceedings of the international conference on Ergonomics & Human Factors 2014, Southampton, UK, 7-10 April 2014 (pp. 443-449). London: Taylor & Francis.

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