In this work, by exploiting the traces left by double compression in the statistics of quantized modified discrete cosine transform coefficients, a single measure has been derived that allows to decide whether an MP3 file is singly or doubly compressed and, in the last case, to devise also the bit-rate of the first compression. Moreover, the proposed method as well as two state-of-the-art methods have been applied to analyze short temporal windows of the track, allowing the localization of possible tampered portions in the MP3 file under analysis. Experiments confirm the good performance of the proposed scheme and demonstrate that current detection methods are useful for tampering localization, thus offering a new tool for the forensic analysis of MP3 audio tracks.

Detection and localization of double compression in MP3 audio tracks / Tiziano Bianchi; Alessia De Rosa; Marco Fontani; Giovanni Rocciolo; Alessandro Piva. - In: EURASIP JOURNAL ON INFORMATION SECURITY. - ISSN 2510-523X. - ELETTRONICO. - 2014:(2014), pp. 1-14. [10.1186/1687-417X-2014-10]

Detection and localization of double compression in MP3 audio tracks

DE ROSA, ALESSIA;FONTANI, MARCO;PIVA, ALESSANDRO
2014

Abstract

In this work, by exploiting the traces left by double compression in the statistics of quantized modified discrete cosine transform coefficients, a single measure has been derived that allows to decide whether an MP3 file is singly or doubly compressed and, in the last case, to devise also the bit-rate of the first compression. Moreover, the proposed method as well as two state-of-the-art methods have been applied to analyze short temporal windows of the track, allowing the localization of possible tampered portions in the MP3 file under analysis. Experiments confirm the good performance of the proposed scheme and demonstrate that current detection methods are useful for tampering localization, thus offering a new tool for the forensic analysis of MP3 audio tracks.
2014
2014
1
14
Tiziano Bianchi; Alessia De Rosa; Marco Fontani; Giovanni Rocciolo; Alessandro Piva
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/867919
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