Computer Engineering and Applications ›› 2017, Vol. 53 ›› Issue (11): 137-141.DOI: 10.3778/j.issn.1002-8331.1603-0034

Previous Articles     Next Articles

Detection method of double compressed MP3 audio with same bit-rate

TAO Biaoli, WANG Rangding, YAN Diqun, JIN Chao   

  1. College of Information Science & Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
  • Online:2017-06-01 Published:2017-06-13


陶表犁,王让定,严迪群,金  超   

  1. 宁波大学 信息科学与工程学院,浙江 宁波 315211

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