TY - JFULL AU - Jixin Liu and Zheming Lu PY - 2009/8/ TI - A Multipurpose Audio Watermarking Algorithm Based on Vector Quantization in DCT Domain T2 - International Journal of Electrical and Computer Engineering SP - 1461 EP - 1467 VL - 3 SN - 1307-6892 UR - https://publications.waset.org/pdf/14650 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 31, 2009 N2 - 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 index-bit 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 ER -