| 一种用于数字音频广播的自适应水印算法 |
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| 引用本文： | 顾怡祥,陈晓光.一种用于数字音频广播的自适应水印算法[J].太赫兹科学与电子信息学报,2008,6(6). |
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| 作者姓名： | 顾怡祥 陈晓光 |
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| 作者单位： | 复旦大学通信科学与工程系,上海,200433 |
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| 摘 要： | 为了解决数字音频广播版权认证,提出一种基于频域和MPEG压缩域的自适应盲检测水印算法。通过量化处理数字音频信号的离散傅里叶变换系数的幅度和MPEG音频流的比例因子的方法嵌入水印。仿真表明,该算法对数字音频信号的MP2压缩、噪声叠加以及滤波等操作具有很强的鲁棒性,可适用于实际数字音频广播系统。
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| 关 键 词： | 数字音频水印 数字音频广播 自适应 盲检测 压缩域 频域 鲁棒性 |
A Self-adapting Audio Watermarking Algorithm for Digital Audio Broadcasting |
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| GU Yi-xiang,CHEN Xiao-guang.A Self-adapting Audio Watermarking Algorithm for Digital Audio Broadcasting[J].Journal of Terahertz Science and Electronic Information Technology,2008,6(6). |
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| Authors: | GU Yi-xiang CHEN Xiao-guang |
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| Abstract: | A new self-adapting and blind audio watermarking algorithm aiming for digital audio broadcasting is put up in this paper. This algorithm is implemented in the frequency domain combined with compression domain. The watermark is embedded by changing both the amplitude of the coefficients of the Fourier Transformation of the audio signal and the Scale Factor of the MPEG audio stream. Test results show that this algorithm is robust to MP2 compression,noise and low-pass filtering. |
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| Keywords: | digital audio watermark digital audio broadcasting self-adapting blind detection compression domain frequency domain robustness |
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