Reverberation Time, Feasibility for Weapons Fire Range Estimation
Abstract
Localization of an acoustic blast source in urban battle spaces is frequently complicated by multiple arrivals resulting from reflections within the acoustic environment. Temporal windowing can be used to isolate the direct arrival in situations where a direct path between source and receiver exist. However, if the source is located around a corner from a receiver the first arrival would lead to an erroneous source location estimate. These complications have prompted the authors to perform initial measurements of reverberation in a semi-urban environment. These measurements will assess the salience of reverberation as a means for estimating range to a blast source. Classical studies in room acoustics characterize reverberant spaces by their reverberation time, the time necessary for a diffuse field to decay 60 dB in level (or another suitable decay amount). Other subtleties, such as the rate of decay and the effect of coupled spaces, allude to the complexity of the environment within which the recordings were made.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2006
- Accession Number
- ADA478767
Entities
People
- Brad Libbey