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A dual-channel time-spread echo method for audio watermarking Xiang, Yong, Natgunanathan, Iynkaran, Peng, Dezhong, Zhou, Wanlei and Yu, Shui 2012, A dual-channel time-spread echo method for audio watermarking, IEEE transactions on information forensics and security, vol. 7, no. 2, pp. 383-392. Title A dual-channel time-spread echo method for audio watermarking Author(s) Xiang, Yong Natgunanathan, Iynkaran Peng, Dezhong Zhou, Wanlei Yu, Shui Journal name IEEE transactions on information forensics and security Volume number 7 Issue number 2 Start page 383 End page 392 Total pages 10 Publisher IEEE Signal Processing Society Place of publication Piscataway, N.J. Publication date 2012-04 ISSN 1556-6013 1556-6021 Keyword(s) audio watermarking autocorrelation colored pseudonoise (PN) sequence echo hiding echo kernel time-spread echo Summary This work proposes a novel dual-channel time-spread echo method for audio watermarking, aiming to improve robustness and perceptual quality. At the embedding stage, the host audio signal is divided into two subsignals, which are considered to be signals obtained from two virtual audio channels. The watermarks are implanted into the two subsignals simultaneously. Then the subsignals embedded with watermarks are combined to form the watermarked signal. At the decoding stage, the watermarked signal is split up into two watermarked subsignals. The similarity of the cepstra corresponding to the watermarked subsignals is exploited to extract the embedded watermarks. Moreover, if a properly designed colored pseudonoise sequence is used, the large peaks of its auto-correlation function can be utilized to further enhance the performance of watermark extraction. Compared with the existing time-spread echo-based schemes, the proposed method is more robust to attacks and has higher imperceptibility. The effectiveness of our method is demonstrated by simulation results. Language eng Field of Research 089999 Information and Computing Sciences not elsewhere classified Socio Economic Objective 970108 Expanding Knowledge in the Information and Computing Sciences HERDC Research category C1 Refereed article in a scholarly journal Copyright notice ©2011, IEEE Persistent URL http://hdl.handle.net/10536/DRO/DU:30044189 Document type: Journal Article Collections: School of Information Technology School of Engineering Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Thu, 05 Apr 2012, 15:56:35 EST Thu, 12 Apr 2012, 16:25:55 EST Thu, 12 Apr 2012, 16:49:04 EST Thu, 12 Apr 2012, 16:51:21 EST Thu, 12 Apr 2012, 16:52:10 EST Filtered Full Citation counts:   Cited 2 times in TR Web of Science Cited 4 times in Scopus Search Google Scholar Access Statistics: 83 Abstract Views, 8 File Downloads  -  Detailed Statistics Created: Thu, 05 Apr 2012, 15:56:35 EST

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