基于数字细菌的立体声音乐版权保护研究

Research on Copyright Protection of Stereo Music Based on Digital Bacteria

基于声音空间变换、小波融合、独立成分分析(ICA)以及数字细菌等技术,提出一种保护立体声音乐产品的知识产权的新方法。将水印数据同时嵌入到两道声音的小波系数中,提取水印时,利用独立成分分析,通过无监督神经网络,获得无噪音的水印。为保证水印的安全,在多媒体数据中嵌入水印后,水印作为隐藏的独立成分信号起着免受数字细菌攻击的作用。数字细菌平时处于休眠状态,用于保护多媒体数据。如果水印遭到破坏,则数字细菌被激活以攻击盗版数据。该技术可用于立体声音乐的版权保护。

A novel technique for authenticity protection of stereo music based on the methods of sound space transform, wavelet fusion, independent component analysis （ICA） and digital bacteria is present, Transform left and right channel sound space （L,R） to other sound space （X,Y） firstly, which constructs two music sounds, then compute the Lth-level discrete wavelet decomposition of the two music sounds, When extract watermark, distill two watermark data WI,W2 from the two wavelet coefficients, then use unsupervised ANN to denoise and get data （watermark） W＇. For watermark security, a covert independent component watermarking signal can serve as a ＂vaccination＂ against dormant digital bacteria protecting the multimedia data, Unauthorized removal of the watermark triggers the bacterium, which then responds appropriately against the pirated data.