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Convention Paper

Forensic Interpretation and Processing of User Generated Audio Recordings

Authors: Maher, Robert C.

AES Convention 149 · Paper 10419 · October 2020

Abstract

For audio forensic analysis, it is increasingly likely that multiple user-generated recordings (UGRs) may be presented as evidence in a criminal investigation. Audio evidence may come from handheld smartphones, private surveillance systems, police body cameras, and other unsynchronized recording devices. When multiple UGRs are available, the recordings could provide spatial and temporal information about the location and orientation of sound sources, and potentially a means to increase intelligibility of spoken utterances. However, UGRs generally start and stop at different times, differ in technical format specifications, and seldom have sufficiently reliable time stamp information for exact time and position synchronization. We study these analytical and practical constraints, and develop forensic recommendations for combining and synchronizing multiple UGRs.

Details

Published in
AES Convention 149
AES Convention
149
Paper number
10419
Publication date
October 6, 2020
Session subject
Audio Applications and Technologies
Affiliation
Montana State University, Bozeman, MT USA (See document for exact affiliation information.)
Type
Convention Paper