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Effective pseudonoise sequence and decoding function for imperceptibility and robustness enhancement in time-spread echo-based audio watermarking

Xiang, Yong, Peng, Dezhong, Natgunanathan, Iynkaran and Zhou, Wanlei 2011, Effective pseudonoise sequence and decoding function for imperceptibility and robustness enhancement in time-spread echo-based audio watermarking, IEEE transactions on multimedia, vol. 13, no. 1, pp. 2-13.

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Title Effective pseudonoise sequence and decoding function for imperceptibility and robustness enhancement in time-spread echo-based audio watermarking
Author(s) Xiang, Yong
Peng, Dezhong
Natgunanathan, Iynkaran
Zhou, Wanlei
Journal name IEEE transactions on multimedia
Volume number 13
Issue number 1
Start page 2
End page 13
Publisher IEEE
Place of publication Piscataway, N.J.
Publication date 2011-02
ISSN 1520-9210
1941-0077
Keyword(s) audio watermarking
autocorrelation
echo hiding
echo kernel
time-spread echo
Summary This paper proposes an effective pseudonoise (PN) sequence and the corresponding decoding function for time-spread echo-based audio watermarking. Different from the traditional PN sequence used in time-spread echo hiding, the proposed PN sequence has two features. Firstly, the echo kernel resulting from the new PN sequence has frequency characteristics with smaller magnitudes in perceptually significant region. This leads to higher perceptual quality. Secondly, the correlation function of the new PN sequence has three times more large peaks than that of the existing PN sequence. Based on this feature, we propose a new decoding function to improve the robustness of time-spread echo-based audio watermarking. The effectiveness of the proposed PN sequence and decoding function is illustrated by theoretical analysis, simulation examples, and listening test.
Language eng
Field of Research 090609 Signal Processing
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2011
Copyright notice ©2010, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30032316

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