Research And Implementation Of Zero-Watermark Algorithm For Chinese-National Instrumental Music

At present,Chinese-National instrumental music has been attracting more and more attention with its national culture moving towards all over the world.In the context of the continuous expansion of spread scope and diversification of the mode of communication of the Chinese-National instrumental music,copyright of Chinese-National instrumental music protection is an urgent problem to be solved.And digital audio-watermarking technology is one of an effective way to solve the copyright problem of Chinese-National instrumental music.On the basic digital audio-watermarking technology,this paper proposes a new digital zero watermarking schemes.And this new scheme adds the linear expansion,signal marking,and key-frame extraction for national musical instruments.This paper will mainly do the discussion and research about this new scheme.The main work for this paper includes following aspects:(1)On the current basic research about watermarking schemes and characteristics of Chinese-National instrumental music,this paper design a watermarking schemes method.This watermark scheme is made up of instrumental music preprocessing,zero watermarks for instrumental music construction and zero watermarks for instrumental music decetion etc.(2)At the instrumental music preprocessing part,a new pretreatment model is designed what basic fundamental model of audio preprocessing and new added linear expansion.And this paper design and realize signal separation,segment annotation,information filtering and linear expansion in instrumental music preprocessing module etc.(3)At the zero watermarks for instrumental music construction part,this paper design a new zero watermark construction model.The key-frame characteristics are put in the first place and combining with instantaneous frequency in this new model.And this paper design and realize these algorithms: key-frame feature extraction,instantaneous frequency feature extraction,frame fusion,frame classification and watermark image processing module etc.(4)At the zero watermarks for instrumental music decetion part,this paper design a new zero watermark decetion models mainly based on similarity calculation and copyright decision.And the analysis modules of watermark information,copyright decision,generate auxiliary information etc will be designed and implemented in this new model.(5)The designed scheme in this paper is analyzed and compared at imperceptibility of watermarks,representational,robustness and anti-aggression.And final results have showed that the new designed scheme has strong pertinence and applicability for the copyright protection for Chinese-National instrumental music works.