In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 148, No. 4_Supplement ( 2020-10-01), p. 2703-2703
Abstract:
Impulse noise exposure is extremely prevalent in many military mission environments and, as such, it is critical that accurate hearing damage risk criteria be implemented. In 2017, the Air Force Research Laboratory (AFRL) conducted measurements at Quantico, Virginia on an outdoor shooting range in order to model exposure due to small firearm impulse noise. In this study, microphones were deployed across multiple arrays around an M16 rifle. Data were collected on the shooter for a selection of operational variables including shooter handedness, shooter height, and empty/occupied adjacent shooting lanes. A source model has been created through interpolation of data collected along a densely populated circular array surrounding the shooter at a radius of roughly three meters. By interpolating the array to achieve a fine angular resolution, the source model was then propagated via spherical spreading to generate a series of field point sound pressure levels. Via direct comparison, the simulated field points were validated against data collected from microphones outside of the source description array. Overall, this discussion provides a synopsis of previous work, future directions for research, and a discussion of the need for a unified, efficient exposure model for impulse noise. [Work supported by ONR.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2020
detail.hit.zdb_id:
1461063-2
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