Echo hiding based stereo audio watermarking against pitch-scaling attacks

Natgunanathan, Iynkaran and Xiang, Yong 2011, Echo hiding based stereo audio watermarking against pitch-scaling attacks, in SIN 2011 : Proceedings of the 4th international conference on Security of information and networks, ACM, New York, N. Y., pp. 37-42.

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Title Echo hiding based stereo audio watermarking against pitch-scaling attacks
Author(s) Natgunanathan, Iynkaran
Xiang, Yong
Conference name Security of Information and Networks. Conference (4th : 2011 : Sydney, N. S. W.)
Conference location Sydney, N. S. W.
Conference dates 14-19 Nov. 2011
Title of proceedings SIN 2011 : Proceedings of the 4th international conference on Security of information and networks
Editor(s) [Unknown]
Publication date 2011
Series ACM International Conference Proceeding Series
Conference series Security of Information and Networks. Conference
Start page 37
End page 42
Publisher ACM
Place of publication New York, N. Y.
Keyword(s) echo-hiding
pitch-scaling
stereo signal
watermarking
Summary In audio watermarking, the robustness against pitch-scaling attack, is one of the most challenging problems. In this paper, we propose an algorithm, based on traditional time-spread(TS) echo hiding based audio watermarking to solve this problem. In TS echo hiding based watermarking, pitch-scaling attack shifts the location of pseudonoise (PN) sequence which appears in the cepstrum domain. Thus, position of the peak, which occurs after correlating with PN-sequence changes by an un-known amount and that causes the error. In the proposed scheme, we replace PN-sequence with unit-sample sequence and modify the decoding algorithm in such a way it will not depend on a particular point in cepstrum domain for extraction of watermark. Moreover proposed algorithm is applied to stereo audio signals to further improve the robustness. Experimental results illustrate the effectiveness of the proposed algorithm against pitch-scaling attacks compared to existing methods. In addition to that proposed algorithm also gives better robustness against other conventional signal processing attacks.
ISBN 9781450310208
Language eng
Field of Research 090609 Signal Processing
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2011, ACM
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042373

Document type: Conference Paper
Collection: School of Engineering
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