Jixin Liu and Zheming Lu
A Multipurpose Audio Watermarking Algorithm Based on Vector Quantization in DCT Domain
1462 - 1467
2009
3
7
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/14650
https://publications.waset.org/vol/31
World Academy of Science, Engineering and Technology
In this paper, a novel multipurpose audio watermarking
algorithm is proposed based on Vector Quantization (VQ) in Discrete
Cosine Transform (DCT) domain using the codeword labeling and
indexbit constrained method. By using this algorithm, it can fulfill the
requirements of both the copyright protection and content integrity
authentication at the same time for the multimedia artworks. The
robust watermark is embedded in the middle frequency coefficients of
the DCT transform during the labeled codeword vector quantization
procedure. The fragile watermark is embedded into the indices of the
high frequency coefficients of the DCT transform by using the
constrained index vector quantization method for the purpose of
integrity authentication of the original audio signals. Both the robust
and the fragile watermarks can be extracted without the original audio
signals, and the simulation results show that our algorithm is effective
with regard to the transparency, robustness and the authentication
requirements
Open Science Index 31, 2009