文章摘要
王卓,赵千川.一种应用心理声学模型的鲁棒音频水印算法[J].声学技术,2006,(3):248~252
一种应用心理声学模型的鲁棒音频水印算法
A robust audio watermarking algorithm using psychoacoustic model
投稿时间:2005-03-30  修订日期:2005-06-27
DOI:
中文关键词: 版权保护  数字水印  心理声学模型  能量量化  MP3压缩
英文关键词: copy protection  digital watermarking  psychoacoustic model  energy quantization  MP3 compression
基金项目:教育部新世纪优秀人才支持计划(NCET-04-0094);清华大学“九八五”基础研究基金(985信息-07-基金-07)
作者单位
王卓 清华大学自动化系, 北京, 100084 
赵千川 清华大学自动化系, 北京, 100084 
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中文摘要:
      数字水印技术作为一种版权保护的重要手段得到了广泛的研究和应用。文中提出了应用心理声学模型对音频进行逐帧分析、自适应地选择水印嵌入位置的算法框架,并在此基础上应用了一种音频频域子带能量量化的水印算法。这一框架对有效地控制听觉透明性和MP3鲁棒性有指导意义。实验证明在保证较高的听觉保真度的同时,算法对各种攻击手段具有满意的鲁棒性。
英文摘要:
      Digital watermarking techniques have been widely studied and applied as a main method for copyright protection.This paper proposes a framework that analyses each audio frame and selects positions for embedding adaptively using a psychoacoustic model.A new method for embedding digital watermarks into audio signals in the frequency domain based on the critical sub-band energy quantization is introduced.This framework can control the trade-off between the perceptual tran-sparence and robustness against MP3 attacks more efficiently.Experimental results show that the algorithm is robust to the most popular attacks such as MP3 compression,etc.
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