摘要
结合人耳听觉特性,用扩频方法在音频信号中的听觉不敏感区域嵌入多路数字水印,从而实现码分复用.在对嵌入信息的检测中,除了少量系统参数外,数字水印的提取不需要原始信号,并且毋需精确同步.实验表明,该水印具有很好的隐蔽性;尤其是对常见攻击,MP3编码具有良好的稳健性.
This paper introduced a new method of audio watermarking based on the property of human auditory system (HAS) and spread spectrum technique. Some imperceptive spectral components are replaced with watermarks using code division multiplexing. Neither the availability of host signal nor precise synchronization is needed on the extraction side. The experimental results show that the proposed scheme can achieve high imperceptibility and satisfactory robustness against attacks, MP3 coding in particular.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第12期2073-2077,2081,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(60372090)
关键词
码分复用
音频水印
扩频
心理听觉模型
Demodulation
Multiplexing
Robustness (control systems)
Spread spectrum communication
Synchronization
