Robust patchwork-based embedding and decoding scheme for digital audio watermarking

Natgunanathan, Iynkaran, Xiang, Yong, Rong, Yue, Zhou, Wanlei and Guo, Song 2012, Robust patchwork-based embedding and decoding scheme for digital audio watermarking, IEEE transactions on audio, speech and language processing, vol. 20, no. 8, pp. 2232-2239.

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Title Robust patchwork-based embedding and decoding scheme for digital audio watermarking
Author(s) Natgunanathan, Iynkaran
Xiang, Yong
Rong, Yue
Zhou, Wanlei
Guo, Song
Journal name IEEE transactions on audio, speech and language processing
Volume number 20
Issue number 8
Start page 2232
End page 2239
Total pages 8
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N. J.
Publication date 2012-10
ISSN 1558-7916
1558-7924
Keyword(s) audio watermarking
discrete cosine transform (DCT)
generalized Gaussian distribution
patchwork
Summary This paper presents a novel patchwork-based embedding and decoding scheme for digital audio watermarking. At the embedding stage, an audio segment is divided into two subsegments and the discrete cosine transform (DCT) coefficients of the subsegments are computed. The DCT coefficients related to a specified frequency region are then partitioned into a number of frame pairs. The DCT frame pairs suitable for watermark embedding are chosen by a selection criterion and watermarks are embedded into the selected DCT frame pairs by modifying their coefficients, controlled by a secret key. The modifications are conducted in such a way that the selection criterion used at the embedding stage can be applied at the decoding stage to identify the watermarked DCT frame pairs. At the decoding stage, the secret key is utilized to extract watermarks from the watermarked DCT frame pairs. Compared with existing patchwork watermarking methods, the proposed scheme does not require information of which frame pairs of the watermarked audio signal enclose watermarks and is more robust to conventional attacks.
Language eng
Field of Research 090609 Signal Processing
Socio Economic Objective 890104 Mobile Telephone Networks and Services
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047958

Document type: Journal Article
Collections: School of Information Technology
School of Engineering
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