| 一种新的混合域自适应数字音频水印算法 |
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| 引用本文： | 王向阳,赵红,崔永瑞.一种新的混合域自适应数字音频水印算法[J].小型微型计算机系统,2006,27(2):316-319. |
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| 作者姓名： | 王向阳 赵红 崔永瑞 |
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| 作者单位： | 1. 辽宁师范大学,计算机与信息技术学院,辽宁,大连,116029;中国科学院,软件研究所,信息安全国家重点实验室,北京,100039
2. 辽宁师范大学,计算机与信息技术学院,辽宁,大连,116029 |
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| 基金项目： | 辽宁省自然科学基金;国家重点实验室基金 |
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| 摘 要： | 以MP3压缩等攻击特点厦局部音频相关特性为基础，提出了一种新的混合城数字音频盲水印算法．首先，结合MP3压缩等攻击特点，对原始数字音频进行自适应的分段处理；再对每个音频数据段进行DWT和DCT；最后，结合局部音频特性与听觉掩蔽特性，自适应确定量化步长．并将水印信号嵌入到音频数据段的低频分量中．仿真实验表明，本文算法不仅具有较好的透明性，而且对诸如重新采样、重新量化、叠加噪声、低通滤波等攻击均具有较好的鲁棒性．特剐地，该算法对于最为普通的MP3压缩攻击具有极强的抵抗能力．
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| 关 键 词： | 数字水印 人类听觉系统 自适应量化 |
| 文章编号： | 1000-1220（2005）02-0316-04 |
| 收稿时间： | 2004-10-09 |
| 修稿时间： | 2004-10-09 |
New Adaptive Digital Audio Watermarking Based on DWT and DCT |
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| WANG Xiang-yang,ZHAO Hong,CUI Yong-rui.New Adaptive Digital Audio Watermarking Based on DWT and DCT[J].Mini-micro Systems,2006,27(2):316-319. |
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| Authors: | WANG Xiang-yang ZHAO Hong CUI Yong-rui |
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| Affiliation: | 1. School of Computer and Information Technique, Liaonin g Normal University, Dalian 116029,China;2.State Key Laboratory of Information Security, institute of Software of Chinese Academy of Sciences, Beijing 100039 ,China |
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| Abstract: | On the basis of the characteristics of MP3 compression and local audio correlation, a new adaptive digital audio watermarking based on DWT and DCT was proposed. Firstly, the original audio signal was adaptively cut into several audio segments according to the height of the watermark image. Secondly, the DWT and DCT were performed on the audio segments. Finally, the watermark was embedded into the low frequency components by adaptive quantization according to the local audio correlation and human auditory masking. The algorithm can extract the watermark without the help from the original digital audio signal. Experimental results showed that the proposed watermarking algorithm is imperceptible and robust against various signal processing such as re-sampling, re-quantifying, noising adding, MP3 compression and low pass filtering. |
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| Keywords: | DWT DCT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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