Overview of Content-Based Adaptive Audio Watermarking
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摘要: 按照时域、变换域2种常见的水印嵌入域,对音频水印技术进行了概述;针对第2代数字水印技术,重点介绍了基于内容的音频水印算法、自适应音频水印算法以及音频水印的同步技术,对它们的优缺点进行了评析.这些算法更强调将水印信息嵌入到音频信号的重要特征上,并与各音频段的自身特点相结合,具有鲁棒性强、不可听性好和较实用等优点,是新一代水印技术发展的趋势.最后,探讨了目前音频水印领域需要解决的问题及进一步研究的方向,这些问题的解决将对网络化音乐制品的知识产权保护与安全传播提供理论和技术支持.Abstract: The digital audio watermarking techniques were summarized regarding the time domain and the transform domain. To the second generation watermarking technique,the content-based audio watermarking,adaptive audio watermarking and synchronization technique were emphasized,and their merits and defects were analyzed. These techniques emphasize more that the watermark information is embedded into the important feature regions of audio signals and combined with the characteristic of various audio segments,so they have some advantages such as strong robustness,good inaudibility and practicability. Therefore,the content-based adaptive audio watermarking technique is the developing direction of watermarking techniques. Finally,the problems to be solved and the future research direction were discussed. The research on the problems will provide theoretical and technical supports for the copyright protection and reliable spread of the network music.
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Key words:
- audio watermarking /
- adaptive watermarking /
- synchronization attack /
- robustness /
- human auditory system
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