| 自适应小波变换的扩频音频数字水印 |
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| 引用本文： | 张连俊.自适应小波变换的扩频音频数字水印[J].计算机工程与设计,2007,28(21):5160-5162. |
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| 作者姓名： | 张连俊 |
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| 作者单位： | 山东理工大学 山东淄博255049 |
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| 基金项目： | 山东理工大学校科研和教改项目 |
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| 摘 要： | 在分析了自适应小波变换特性的基础上,提出一种基于自适应小波变换的扩频音频数字水印算法.将二值水印图像降维处理转化为一维序列,再将一维序列与m序列做扩频调制,对音频信号进行分段做自适应小波变换,把经过扩频调制的水印信号经过量化处理嵌入到自适应小波变换后的系数中.模拟实验证明,该方法具有较好的不可感知性和鲁棒性.
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| 关 键 词： | 音频信号 音频数字水印 扩频 自适应 小波变换 自适应 小波变换 扩频调制 音频数字水印 adaptive wavelet transform based digital watermarking audio spectrum 鲁棒性 不可感知性 方法 验证 模拟 系数 量化处理 水印信号 分段 音频信号 序列 |
| 文章编号： | 1000-7024（2007）21-5160-03 |
| 修稿时间： | 2006-11-10 |
Spread spectrum audio digital watermarking based on adaptive wavelet transform |
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| ZHANG Lian-jun.Spread spectrum audio digital watermarking based on adaptive wavelet transform[J].Computer Engineering and Design,2007,28(21):5160-5162. |
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| Authors: | ZHANG Lian-jun |
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| Affiliation: | Shandong University of Technology, Zibo 255049, China |
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| Abstract: | The adaptive wavelet transform and spread-spectrum is analyzed at first,and a spread-spectrum digital audio watermarking based on the adaptive wavelet transform is proposed.The binary watermarking image is converted into a one-dimension sequence,which is modulated with the m-sequence,before the audio signal is finally divided into segments and adaptive wavelet transform is performed. The watermark can be extracted by adaptive wavelet transform on the audio signal embedded watermark.Simulation experimental results demonstrate that the technique is robust and imperceptible. |
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| Keywords: | audio signal digital audiowatermarking spread-spectrum adaptive wavelet transform |
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