Using the ENF Criterion for Determining the Time of Recording of Short Digital Audio Recordings

The Electric Network Frequency (ENF) Criterion is a recently developed forensic technique for determining the time of recording of digital audio recordings, by matching the ENF pattern from a questioned recording with an ENF pattern database. In this paper we discuss its inherent limitations in the case of short – i.e., less than 10 minutes in duration – digital audio recordings. We also present a matching procedure based on the correlation coefficient, as a more robust alternative to squared error matching.

• Type: Conference
• Year: 2009
• Where: IWCF
• Authors: Maarten Huijbregtse, Zeno Geradts
• Keywords: Applied Computing, Digital Audio Recordings, ENF Pattern, ENF Pattern Database, IWCF 2009