Phased array for acoustic hail and warning.
Timothy E. McDevitt, Timothy A. Brungart, Andrew R. Barnard, David M. Jenkins · The Journal of the Acoustical Society of America · 2008
Background is given for the need of a high output acoustic hailing device (AHD) for military use. Those detrimental effects, which require high output power of an AHD, such as refraction, absorption, and insertion loss are briefly reviewed along with associated experimental data. The background for intelligibility is touched to address the importance of frequency response. A prototype phased array AHD, THOR, is then described and characterized via experimental results. [Work supported by the DOD.]