摘要
提出了一种适应于短波窄带信道的自同步音频水印算法.该算法具有如下优点:(1)在隐藏水印信息的同时,嵌入同步信号,使得水印具有时钟自同步和数据自同步的能力.(2)水印信号基于窄带信道的传输,适用于短波广播.(3)水印信号能够抗拒短波传输中的各种干扰.实验表明:该算法能够实际地应用于短波节目的水印嵌入,对于短波传输中的各种干扰都有较好的鲁棒性.
This article presents a novel self-synchronizing audio watermark algorithm for shortwave narrow band channel. This algorithm has the following merits. （1） While the watermark information being hideaway, synchronized signal is inserted, which enables the watermark to have the clock self-synchronizing and the data self-synchronizing abilities. （2） The watermark can be transmitted through narrow band channel, which is suitable for the shortwave broadcasting. （3） The watermark signal can resist disturbances during shortwave transmission. The experiments indicate that, this algorithm can be applied to watermark insertion for shortwave program, and it showes satisfactory robustness for real-world application.
出处
《计算机学报》
EI
CSCD
北大核心
2008年第7期1283-1290,共8页
Chinese Journal of Computers
关键词
数字水印
音频水印
自同步
短波
窄带
digital watermark
audio watermark
self-synchronizing
shortwave
narrowband
