Investigation of gunshot waveforms largely includes analyzing the muzzle blast. Generated by the combustion of gunpowder immediately after firing, these brief duration directional shock waves travel outward in all directions at the speed of sound. Features of these waveforms are analyzed to identify characteristics of a particular shot, for example, the combination of firearm type, ammunition, and orientation. This paper includes measured muzzle blast durations for several common firearms and calculation of the total acoustical energy during the muzzle blast period.

Authors: Routh, Tushar; Maher, Rob
Affiliation: Montana State University, Bozeman, MT, USA
AES Convention: 141 (September 2016) Paper Number: 9635
Publication Date: September 20, 2016
Subject: Perception & Forensic Audio

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