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A novel bipolar time-spread echo hiding based watermarking method for stereo audio signals

conference contribution
posted on 2010-01-01, 00:00 authored by Iynkaran NatgunanathanIynkaran Natgunanathan, Yong XiangYong Xiang
In this paper, a novel bipolar time-spread (TS) echo hiding based watermarking method is proposed for stereo audio signals, to overcome the low robustness problem in the traditional TS echo hiding method. At the embedding, echo signals with opposite polarities are added to both channels of the host audio signal. This improves the imperceptibility of the watermarking scheme, since added watermarks have similar effects in both channels. Then decoding part is developed, in order to improve the robustness of the watermarking scheme against common attacks. Since these novel embedding and decoding methods utilize the advantage of two channels in stereo audio signals, it significantly reduces the interference of host signal at watermark extraction which is the main reason for error detection in the traditional TS echo hiding based watermarking under closed-loop attack. The effectiveness of the proposed watermarking scheme is theoretically analyzed and verified by simulations under common attacks. The proposed echo hiding method outperforms conventional TS echo hiding based watermarking when their perceptual qualities are similar.

History

Event

International Conference on Signal Processing and Communication Systems (4th : 2010 : Gold Coast, Qld.)

Pagination

1 - 7

Publisher

IEEE

Location

Gold Coast, QLD.

Place of publication

United States

Start date

2010-12-13

End date

2010-12-15

ISBN-13

9781424479061

ISBN-10

1424479061

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2010, IEEE

Title of proceedings

ICSPCS 2010 : Proceedings of the 4th International Conference on Signal Processing and Communication Systems