回声隐藏技术的应用研究  

Application Research on Echo Hiding Technology

作　　者：殷雄[1] 张晓明[1] 

机构地区：[1]北京石油化工学院计算机系,北京102617

出　　处：《北京石油化工学院学报》2005年第4期61-64,共4页Journal of Beijing Institute of Petrochemical Technology

摘　　要：信息隐藏技术对于版权保护和保密通信非常重要。基于声音隐藏技术,分析了回 声隐藏的嵌入和提取过程。然后,利用MATLAB工具编程,将文本信息嵌入音频载体中。在隐藏容量 方面,依次隐藏8、30和100个比特信息,并且对隐藏100比特的信息进行分析。结果表明,在衰减系数 为0．7或0．8左右,信息恢复率较好,高达82％。最后,对回声延时的取值合理性进行了分析。Information hiding technology is very important for copyright protection and secret communication. Based on audio hiding technology, echo hiding technology is presented with description of message embedding and extracting process. Then, the text message is embedded into audio by MATLAB simulation. In aspect of echo data hiding capacity, 8, 30 and 100 Bits messages are embedded respectively. 100 Bits messages are hided and analyzed completely. The result shows that when the relative volume is set to 0.7 or 0.8, the information recovery rate amounts to 82%. Finally, the rationality of echo hiding delay parameter is analyzed.

关 键 词：回声隐藏 仿真 音频 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]