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.
Maher, Robert C.
Affiliation: Montana State University, Bozeman, MT USA
AES Convention: 149 (October 2020) Paper Number: 10419
Publication Date: October 22, 2020
Subject: Audio Applications and Technologies
No AES members have commented on this paper yet.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.