TY - GEN
T1 - Extraction of electric network frequency signals from recordings made in a controlled magnetic field
AU - Sanders, Richard W.
AU - Popolo, Peter S.
PY - 2008
Y1 - 2008
N2 - An Electric Network Frequency (ENF) signal is the 60 Hz component of an AC power signal that varies over time due to fluctuations in power production and consumption, across the entire grid of a power distribution network. When present in audio recordings, these signals (or their harmonics) can be used to authenticate a recording, time stamp the original, or determine if a recording was copied or edited. This paper will present the results of an experiment to determine if ENF signals in a controlled magnetic field can be detected and extracted from audio recordings made with battery and externally powered audio recording devices.
AB - An Electric Network Frequency (ENF) signal is the 60 Hz component of an AC power signal that varies over time due to fluctuations in power production and consumption, across the entire grid of a power distribution network. When present in audio recordings, these signals (or their harmonics) can be used to authenticate a recording, time stamp the original, or determine if a recording was copied or edited. This paper will present the results of an experiment to determine if ENF signals in a controlled magnetic field can be detected and extracted from audio recordings made with battery and externally powered audio recording devices.
UR - http://www.scopus.com/inward/record.url?scp=84866508788&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866508788&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84866508788
SN - 9781605607122
T3 - Audio Engineering Society - 125th Audio Engineering Society Convention 2008
SP - 1143
EP - 1150
BT - Audio Engineering Society - 125th Audio Engineering Society Convention 2008
T2 - 125th Audio Engineering Society Convention 2008
Y2 - 2 October 2008 through 5 October 2008
ER -