In this paper, a method to detect the presence of double compression in a MP3 audio file is proposed. By exploiting the effect of double compression in the statistical properties of quantized MDCT coefficients, a single measure is derived to decide if a MP3 file is single compressed or it has been double compressed and also to devise the bit-rate of the first compression. Experimental results confirm the performance of the detector, mainly when the bit-rate of the second compression is higher than the bit-rate of the first one.
Detection and classification of double compressed MP3 audio tracks / Tiziano Bianchi;Alessia De Rosa;Marco Fontani;Giovanni Rocciolo;Alessandro Piva. - ELETTRONICO. - (2013), pp. 159-164. (Intervento presentato al convegno First ACM workshop on Information hiding and multimedia security - IH&MMSec '13 tenutosi a Montpellier, France nel June 17–19, 2013) [10.1145/2482513.2482523].
Detection and classification of double compressed MP3 audio tracks
DE ROSA, ALESSIA;FONTANI, MARCO;PIVA, ALESSANDRO
2013
Abstract
In this paper, a method to detect the presence of double compression in a MP3 audio file is proposed. By exploiting the effect of double compression in the statistical properties of quantized MDCT coefficients, a single measure is derived to decide if a MP3 file is single compressed or it has been double compressed and also to devise the bit-rate of the first compression. Experimental results confirm the performance of the detector, mainly when the bit-rate of the second compression is higher than the bit-rate of the first one.
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