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Techniques for the Authentication of Digital Audio Recordings

In forensic audio one important task is the authentication of audio recordings. Standards and procedures already exist regarding analogue recordings. In the field of digital recording and digital media the conditions are different. A rock solid methodology is needed here, but does not exist yet. This paper reviews existing techniques and presents some results regarding an additional tool, the ENF criterion, which should be considered to become a standard within the AES as well as in the forensic community as a whole.

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