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Increasing the temporal resolution of ENF analysis via harmonic distortion

: Cuccovillo, Luca; Aichroth, Patrick

Lacey, D. ; Audio Engineering Society -AES-:
Audio Forensics : Arlington, Virginia, USA 15 – 17 June 2017
Red Hook, NY: Curran, 2017
ISBN: 978-1-5108-4348-6
International Conference on Audio Forensics <6, 2017, Arlington/Va.>
Fraunhofer IDMT ()

This paper presents an approach for improved ENF analysis based on harmonic distortion. It discusses the creation of artificial harmonics in order to significantly increase temporal resolution for ENF analysis, which is a key requirement for many editing detection use cases, without sacrificing detection accuracy. The benefits of including this approach into pre-existing tampering analysis methods resulted in an immediate increase of both precision and recall.