Computer Engineering and Applications ›› 2017, Vol. 53 ›› Issue (11): 137-141.DOI: 10.3778/j.issn.1002-8331.1603-0034
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TAO Biaoli, WANG Rangding, YAN Diqun, JIN Chao
Online:
Published:
陶表犁,王让定,严迪群,金 超
Abstract: MP3 speech tampering process usually includes three operations, i.e., decompression, tampering, recompression, which will inevitably introduce a double compression. Therefore, double compression detection is a necessary condition for MP3 speech tampering detection. In this work, the statistical characteristics of quantized MDCT coefficients are analyzed, and a model is established for fitting the relationship between speech duration and those characteristics. Finally, a method is put forward, which can not only effectively detect double compression for MP3 speech, but also reveal the relationship between speech duration and detection accuracy.
Key words: double compression, MP3 speech, Modified Discrete Cosine Transform(MDCT) coefficients, fitting
摘要: 通常MP3语音的篡改过程会经过解压、篡改、重压缩三个操作,它不可避免地会产生双压缩。因此MP3语音的双压缩检测是MP3语音篡改检测的必要条件。通过分析量化MDCT系数在不同时长下的统计特征,建立拟合模型,提出一种与时长相关的相同码率MP3双压缩检测方法。该方法不仅可以快速有效地实现对MP3语音的双压缩检测,而且还揭示了语音时长与检测率的关系。
关键词: 双压缩, MP3语音, 改进的离散余弦变换(MDCT)系数, 拟合
TAO Biaoli, WANG Rangding, YAN Diqun, JIN Chao. Detection method of double compressed MP3 audio with same bit-rate[J]. Computer Engineering and Applications, 2017, 53(11): 137-141.
陶表犁,王让定,严迪群,金 超. 与时长相关的相同码率MP3双压缩检测方法[J]. 计算机工程与应用, 2017, 53(11): 137-141.
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URL: http://cea.ceaj.org/EN/10.3778/j.issn.1002-8331.1603-0034
http://cea.ceaj.org/EN/Y2017/V53/I11/137