Title

Extraction of Electric Network Frequency Signals from Recordings Made in a Controlled Magnetic Field

Authors

Richard W. Sanders, University of Colorado DenverFollow
Peter Popolo, Montclair State University

Document Type

Conference Proceeding

Publication Date

12-1-2008

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.

Montclair State University Digital Commons Citation

Sanders, Richard W. and Popolo, Peter, "Extraction of Electric Network Frequency Signals from Recordings Made in a Controlled Magnetic Field" (2008). Department of Communication Sciences and Disorders Faculty Scholarship and Creative Works. 52.
https://digitalcommons.montclair.edu/communcsci-disorders-facpubs/52