Large Weapon Environmental Noise Characterization - 04/10/07

BRRC is working to determine the noise source characteristics for several large caliber weapons for the U. S. Army.

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Description

To avoid negative impacts on testing and training mission capability due to noise, the U.S. Army needs detailed information about the blast pressure field due to large weapons. The noise software tools, BNOISE2™ and RMTK Noise Tool, that DoD uses to predict and assess impacts of large weapon noise require accurate acoustic source emission models. These models require measurements of pressure waveform, peak level, and 1/3-octave-band sound exposure levels. A free-field representation of the sound source acoustical emission, containing no waveform signal perturbations due to the ground, other reflecting surfaces, or propagation anomalies, is required. This research is needed to ensure installation commanders have the best noise information possible to accomplish training and testing with minimum impact on the civilian communities surrounding installations.