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Impulse noise measurements of M16 rifles at Quantico Marine Base

2018; Acoustical Society of America; Volume: 143; Issue: 3_Supplement Linguagem: Inglês

10.1121/1.5036328

1520-9024

Reese D. Rasband, Alan T. Wall, Kent L. Gee, S. Hales Swift, Caleb M. Wagner, William J. Murphy, Chucri A. Kardous,

Advanced Sensor Technologies Research

This paper describes a study conducted at U.S. Marine Corps Base Quantico to determine firing range impulse noise levels and assess noise exposures. Measurements were performed with M16 rifles at an outdoor firing range using a 113-channel array of 6.35 and 3.18 mm microphones that spanned potential locations for both shooters and instructors. Data were acquired using 24-bit cards at a sampling rate of 204.8 kHz. Single weapon measurements were made with and without an occupied range, with a shooter and with a remotely triggered gun stand. In addition, measurements were made with multiple shooters to simulate exposures for a realistic range environment. Results are shown for the various range configurations as a function of angle and distance. Analyses include waveforms, spectra, and peak levels, as well as the 100 ms A-weighted equivalent levels required by military standard MIL-STD-1474E. [Sponsored by US Office of Naval Research.]