Authors: Hong Zhao Yifan Chen Rui Wang Hafiz Malik
Publish Date: 2016/07/26
Volume: 76, Issue: 12, Pages: 13897-13927
Abstract
Audio splicing is one of the most common manipulation techniques in the area of audio forensics In this paper the magnitudes of acoustic channel impulse response and ambient noise are proposed as the environmental signature Specifically the spliced audio segments are detected according to the magnitude correlation between the query frames and reference frames via a statically optimal threshold The detection accuracy is further refined by comparing the adjacent frames The effectiveness of the proposed method is tested on two data sets One is generated from TIMIT database the second is made in four acoustic environments using a commercial grade microphones Experimental results show that the proposed method not only detects the presence of spliced frames but also localizes the forgery segments with near perfect accuracy Comparison results illustrate that the identification accuracy of the proposed scheme is higher than the previous schemes In addition experimental results also show that the proposed scheme is also superior to the previous works A realworld meeting recording database AMI corpus is also used to verify the effectiveness of the proposed method for practical applicationsThis work is supported by the National Natural Science Foundation of China Grant No 61402219 2013 Guangdong Natural Science Funds for Distinguished Young Scholar S2013050014223 the NPST program by the King Saud University under grant number 12INF263402 and a grant from the National Science Foundation CNS1440929
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