A Novel Audio Watermarking Algorithm for Copyright Protection Based on DCT Domain
Audio digital watermarking technology is the new means of audio reproduction, which can pre-implant the special data as a watermark to the audio signal which pass the information on behalf of the owner of identity and prove the users legitimacy. The novel technology of embedding image data into the audio signal and additive audio watermarking algorithm based on DCT domain is proposed. AC DCT coefficients play different influence in robust and inaudibility. First, we decompose the audio into no overlapping blocks (eight data per block). Then every block performs the DCT operation: watermark is embedded by modulating AC DCT coefficient Every block is embedded one bit message. Experimental results demonstrate that the watermark is inaudible and this algorithm is robust to common operations of digital audio signal processing, such as low-pass filtering, smoothing, adding noise and so on. The extracted watermark image quality is showed by considering normalize correlation (NC) value with a suitable scaling parameter for embedding.
Audio watermarking DCT NC
Yan Yang Rong Huang Mintao Xu
Nanchang HangKong University School of electronic Information Nanchang Jiangxi 330063,China Hangzhou Xizi Fuxin Technology Co., Ltd., Hangzhou Zhejiang 310022,China Zhejiang Steel Structure Co., Ltd.Zhongtian Construction Group, Hangzhou Zhejiang 311305,China
国际会议
Second International Symposium on Electronic Commerce and Security(第二届电子商务与安全国际研究大会)(ISECS 2009)
南昌
英文
184-188
2009-05-22（万方平台首次上网日期，不代表论文的发表时间）