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.
|Title of host publication||Contemporary ergonomics and human factors 2014: Proceedings of the international conference on Ergonomics & Human Factors 2014, Southampton, UK, 7-10 April 2014|
|Editors||Sarah SHARPLES, Steven SHORROCK|
|Place of Publication||London|
|Publisher||Taylor & Francis|
|ISBN (Electronic)||9780429227288, 9781315765457|
|ISBN (Print)||9781138026353, 1138026352|
|Publication status||Published - Apr 2014|