关键词： 数字水印 ; 音频水印; 小波变换 ; 鲁棒性 ；感知模型
Abstract
While the network and the numerical information bring convenience to people, also they bring some hidden danger, the sensitive information may be stolen, changed, and illegal duplication disseminated etc very easily, the traditional information protection method (for example, the cryptology) already cannot satisfy the security of the present digitization media. Therefore, the theory whose core technology is the digitized information hideaway arises at the historic moment. The information security and secrecy appears more and more important and the information security has become the focal point of people. Also is now one of information field research hot spots. This paper (thesis) introduce the concept and characteristics of audio frequency numeral watermark, and its analysis theory, technical mold, realized algorithm and the method of attack then proposed one new algorithm, produced the operation simulation experiment of how to augment watermark to the audio data and the method of attacking and withdrawing watermark in the MATLAB environment .At last, Summarize the prospect and the forecast of digital watermark.
Key words：Digital watermarking；Audio watermarking ；wavelet transform；robustness ； percept model
