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  • 1
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2018
    In:  The Journal of the Acoustical Society of America Vol. 143, No. 6 ( 2018-06-01), p. 3688-3697
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 143, No. 6 ( 2018-06-01), p. 3688-3697
    Abstract: Audible alarms are a ubiquitous feature of all high-paced, high-risk domains such as aviation and nuclear power where operators control complex systems. In such settings, a missed alarm can have disastrous consequences. It is conventional wisdom that for alarms to be heard, “louder is better,” so that alarm levels in operational environments routinely exceed ambient noise levels. Through a robust experimental paradigm in an anechoic environment to study human response to audible alerting stimuli in a cognitively demanding setting, akin to high-tempo and high-risk domains, clinician participants responded to patient crises while concurrently completing an auditory speech intelligibility and visual vigilance distracting task as the level of alarms were varied as a signal-to-noise ratio above and below hospital background noise. There was little difference in performance on the primary task when the alarm sound was −11 dB below background noise as compared with +4 dB above background noise—a typical real-world situation. Concurrent presentation of the secondary auditory speech intelligibility task significantly degraded performance. Operator performance can be maintained with alarms that are softer than background noise. These findings have widespread implications for the design and implementation of alarms across all high-consequence settings.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2018
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2022
    In:  The Journal of the Acoustical Society of America Vol. 152, No. 4_Supplement ( 2022-10-01), p. A54-A55
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 152, No. 4_Supplement ( 2022-10-01), p. A54-A55
    Abstract: In high-risk domains, accurate and timely communications while multitasking are necessary for safety and efficiency. Complex musical/acoustic environments cause hindered communication and awareness. This study used an audio-visual multi-tasking paradigm that examined speech intelligibility and if formal music training (FMT) can mitigate these challenges. Twenty-five students (16F/9M) from Vanderbilt University participated with varying levels of FMT: no FMT, 1–3 years, 3–5 years, and 5+ years of FMT. The study found that the degree of FMT significantly impacted non-response (p-value  & lt; 0.001). Among participants with no FMT, the presence of background music increased the odds of non-response by 1.5-fold (95% CI: 0.95, 2.37), conversely, participants with 5+ years of FMT had no decrease (OR: 0.97, 95% CI: 0.69, 1.36), showing that non-response in the presence of music worsens with each subgroup until 5+ years of FMT. The accuracy for all groups was similar (p = 0.74) and the background music decreased accuracy for all groups (OR: 0.67, 95% CI: 0.58, 0.76). Although levels of accuracy were similar for all, the 5+ FMT group responded less frequently, which may indicate increased working memory (i.e., phonological loop) and meta-cognition, a valuable skill in high-risk industry. Future research can explore the pedagogy of musical training.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2022
    detail.hit.zdb_id: 1461063-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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