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

journal contribution
posted on 2012-10-01, 00:00 authored by Iynkaran NatgunanathanIynkaran Natgunanathan, Yong XiangYong Xiang, Y Rong, Wanlei Zhou, S Guo
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.

History

Journal

IEEE transactions on audio, speech and language processing

Volume

20

Issue

8

Pagination

2232 - 2239

Publisher

Institute of Electrical and Electronics Engineers

Location

Piscataway, N. J.

ISSN

1558-7916

eISSN

1558-7924

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2012, IEEE