Auditory Hazard Assessment Algorithm for Humans: Difference between revisions

Revision as of 15:55, 18 September 2018

Revision as of 15:55, 18 September 2018

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Combatants in every branch of the United States’ military are at risk for auditory impairments from steady state or [[Impulse_noise|impulse noises]]. While applying double hearing protection helps prevent auditory damage, it may compromise effectiveness by isolating the user from his or her environment. With hearing protection on, a soldier is less likely to be aware of his or her movements, alerting the enemy to their presence. Hearing protection devices (HPD) could also require higher volume levels for communication, negating their purpose.<ref name=":0">{{cite web |last1=Amrein |first1=Bruce |title=NOISE LIMITS FOR WARFIGHTING Recently Revised Standard Addresses Noise from Military Operations |url=http://synergist.aiha.org/201611-noise-limits-for-warfighting |website=thesynergist |accessdate=3 July 2018}}</ref>

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As the MIL-STD-1474 has evolved, technology and methods have improved the AHAAP’s accuracy. AHAAP has been proven to be more accurate in cases of double protection but not always in unwarned impulse noise instances relative to the competitive metric LAeq8hr. <ref name=":2">{{cite web |last1=Nakashima |first1=Ann |title=A comparison of metrics for impulse noise exposure |url=http://cradpdf.drdc-rddc.gc.ca/PDFS/unc206/p802859_A1b.pdf |publisher=Defence Research and Development Canada |accessdate=3 July 2018 |date=November 2015}}</ref> Some suggestions for further development focus on creating a more user-friendly software, the placement of the microphone in data collection, the absence of the MEM reflex in populations, and the reevaluation of free-field conditions in calculations. Agencies such as NATO, the American Institute of Biological Sciences, and the National Institute for Occupational Safety and Health agreed that these suggestions be attended to before the metric is implemented. This shared conclusion was made prior to the development of MIL-STD-1474E. <ref name=":2" />

== References ==

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{{reflist}}

[[Category:Military of the United States standards]]

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