Extraction of electric network frequency signals from recordings made in a controlled magnetic field

Richard W. Sanders, Peter Popolo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationAudio Engineering Society - 125th Audio Engineering Society Convention 2008
Pages1143-1150
Number of pages8
StatePublished - 1 Dec 2008
Event125th Audio Engineering Society Convention 2008 - San Francisco, CA, United States
Duration: 2 Oct 20085 Oct 2008

Publication series

NameAudio Engineering Society - 125th Audio Engineering Society Convention 2008
Volume2

Other

Other125th Audio Engineering Society Convention 2008
CountryUnited States
CitySan Francisco, CA
Period2/10/085/10/08

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  • Cite this

    Sanders, R. W., & Popolo, P. (2008). Extraction of electric network frequency signals from recordings made in a controlled magnetic field. In Audio Engineering Society - 125th Audio Engineering Society Convention 2008 (pp. 1143-1150). (Audio Engineering Society - 125th Audio Engineering Society Convention 2008; Vol. 2).