摘要
数字水印技术被看作辅助信息通信机制的一种特殊形式。本文采用这种机制提出了一种稳健的数字音频水印算法,嵌入算法利用了原始音频信号的感知冗余来自适应地控制水印信号对音频品质的冲击,嵌入水印后的音频信号与原始信号在感知上是相似的。利用均值滤波处理,算法在水印的检测过程中不需要使用原始信号。实验表明本算法对通常的音频信号处理,如MP3音频压缩、低通滤波等具有较好的稳健性。
Digital watermarking techniques are seen as a special form of communications with side information mechanism. This paper proposes a robust digital audio algorithm based on the mechanism. The embedding process exploits the perceptual redundancy of the audio signal to control adaptively the acoustic impact of the watermark. The audio signal embedded watermark is perceptually similar to the original one. Employing mean filtering process, the algorithm doesnt require the use of original signal for watermark detection. The experimental results show the algorithm is robust against common audio signal processing such as MP3 audio compression, low-pass filtering, etc.
出处
《通信学报》
EI
CSCD
北大核心
2002年第11期110-117,共8页
Journal on Communications
