Additive No se Detection and Its Application To Audio Forensics

被引：0
|
作者：
Yang, Rui [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Informat Management, Guangzhou, Guangdong, Peoples R China
来源：
2014 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA) | 2014年
关键词：
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Digital audio recordings can he manipulated by pervasive audio editing software easily. Often forgery would not be naive splicing. Post-processing would be a part of tampering. Post-processing can eliminate the obvious traces of forgery. Noise can cover audible evidence of forgery and destroy traces of other tampering operations. The detection of additive noise in audio signal is a useful tool for audio forensics. In this paper, we investigate the effect of additive noise on audio signal, and propose a feature named "sign change rate" for detecting additive noise. Via theoretical analyze and extensive experiments, it shows the proposed feature is effective in additive noise detection. Also the method can be a potential tool for forgery localization of digital audio.
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页数：5
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