数字音频水印  

Digital Audio Water Mark

作　　者：周宏[1] 陈健[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《电声技术》2002年第7期10-14,共5页Audio Engineering

摘　　要：感知音频编码是音频信号存储和传输的主流技术。数字音频水印技术和感知音频编码技术相结合,在音频信号中嵌入水印数据。在保证合成音频信号质量不发生可察觉变化的同时,充分保证水印数据的健壮性。文中首先介绍了数字水印系统的概况,然后讨论了数字音频水印系统的特点和要求,比较了常用的数字音频水印技术,接着重点讨论了基于扩频技术的数字音频水印系统的实现方案,最后归纳了数字音频水印的典型应用。Perceptual audio coding is the mainstream technology for the storage and trans-mission of audio signals.Combined with perceptual audio coding technology,digital audio water-marking technology embeds watermark data into audio signals.Keeping the variations of synthe-sized audio signals perceptually imperceptible,the robustness of the watermark is fully assured.The outline of digital watermarking system is first introduced in this paper.Then the demands and properties of digital audio watermarking system and commonly used watermarking technologies are discussed and compared.Next,different solutions based on spreading sprectrum technology are discussed in detail.Lastly,the typical applications are summarized.

关 键 词：数字音频 水印 音频编码 扩频技术 音频信号存储 传输 

分 类 号：TN912.3[电子电信—通信与信息系统]