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。
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.
出处
《信息与电子工程》
2008年第6期409-414,共6页
information and electronic engineering
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
digital audio watermark
digital audio broadcasting
self-adapting
blind detection
compression domain
frequency domain
robustness
