A novel pseudonoise sequence for time-spread echo based audio watermarking
Natgunanathan, Iynkaran and Xiang, Yong 2009, A novel pseudonoise sequence for time-spread echo based audio watermarking, in GLOBECOM 2009 : Riding the wave to global connectivity : Proceedings of the IEEE Global Telecommunication Conference 2009, IEEE, Piscataway, N. J., pp. 1-6.
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A novel pseudonoise sequence for time-spread echo based audio watermarking
This paper deals with the problem of digital audio watermarking using echo hiding. Compared to many other methods for audio watermarking, echo hiding techniques exhibit advantages in terms of relatively simple encoding and decoding, and robustness against common attacks. The low security issue existing in most echo hiding techniques is overcome in the timespread echo method by using pseudonoise (PN) sequence as a secret key. In this paper, we propose a novel sequence, in conjunction with a new decoding function, to improve the imperceptibility and the robustness of time-spread echo based audio watermarking. Theoretical analysis and simulation examples illustrate the effectiveness of the proposed sequence and decoding function.