Magneto-resistive imaging of cassette tapes for forensic analysis applications is presented. Sample tapes were recorded on various tape recorders with events typically encountered in investigations. A comparison of the images with those obtained using ferrofluid is presented, along with comparisons of multiple instances of the same event with the various recorders.

Authors: Marr, Kenneth; Pappas, David P.
Affiliations: National Institute of Standards and Technology; FBI Engineering Research Facility, Audio Laboratory, Quantico(See document for exact affiliation information.)
AES Conference: 33rd International Conference: Audio Forensics-Theory and Practice (June 2008)
Paper Number: 14
Publication Date: June 1, 2008
Subject: Audio Forensics: Forensics in Audio Curriculum

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