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应用科学学报 ›› 2005, Vol. 23 ›› Issue (4): 341-344.

• 论文 • 上一篇    下一篇

抗MP3编码的音频水印频域嵌入方案

刘伟, 王朔中, 张新鹏   

  1. 上海大学通信与信息工程学院, 上海 200072
  • 收稿日期:2004-04-21 修回日期:2004-07-01 出版日期:2005-07-31 发布日期:2005-07-31
  • 作者简介:刘伟(1978-),男,山东淄博人,硕士生,E-mail:whatease@163.com;王朔中(1943-),男,江苏苏州人,教授,博导,E-mail:shuowang@staff.shu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(60372090)

Frequency Domain Audio Watermark Embedding Capable of Resisting MP3 Encoding

LIU Wei, WANG Shuo-zhong, ZHANG Xin-peng   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2004-04-21 Revised:2004-07-01 Online:2005-07-31 Published:2005-07-31

PDF

80

被引次数

6

摘要： 基于MP3编码中所应用的心理声学模型和感知熵(PE),对音频信号中PE值大于1 800的帧进行数字水印嵌入.嵌入在频域中进行,通过叠加一个加权的随机复序列嵌入水印信息.在接收端,采用频域相关法能可靠提取嵌入数据,仅用到少量系统参数而不需要原始信号.实验表明该水印具有很好的隐蔽性,对于MP3编码表现出优良的稳健性.

关键词: 心理声学模型, 感知熵, 音频水印, MP3编码

Abstract: Based on the psychoacoustic model Ⅱ and perceptual entropy (PE) used in MP3 encoding, watermark embedding is carried out by modifying the frames with PE above 1 800.By adding a random complex sequence to the spectral components in the medium and low bands in the frequency domain, a watermark is embedded.Extraction of the embedded data is achieved by using a frequency domain correlation approach without the original host signal.Experimental results show that the proposed scheme can achieve high imperceptibility and satisfactory robustness against MP3 encoding.

Key words: audio watermarking, psychoacoustics auditory model, MP3 encoding, PE

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