均值量化语音信息隐藏算法研究  

Research on the Audio Information Hiding Algorithms Based on Mean Quantization

作　　者：宁国强[1] 

机构地区：[1]中国人民解放军西安通信学院,西安710106

出　　处：《信息安全研究》2016年第10期909-912,共4页Journal of Information Security Research

摘　　要：提出了一种新的均值量化的语音信息隐藏技术.采用对量化区间进行分段调整的方法来减少对载体语音DWT系数的修改量,提高信息隐藏的不可感知性;采用对落在抗攻击能力弱的边界区域的均值进行调整的方法来提高信息隐藏的抗攻击能力.实验结果表明,该算法在信噪比(signal noise ratio,SNR)和归一化相关系数(normalized cross-correlation,NC)等性能指标上较当前的均值量化算法有一定的提高.We presented a new blind digital audio information hiding algorithms based on DWT and mean quantization. In order to achieve the high impercept ibility,the modification of wavelet coefficients was reduced by piecewise adjustment the quantized area. The ability of resisting attack was also improved by adjustment the boundary value with poor resistance to attack. Experimental results demonstrate that the proposed method has a better Signal Noise Ratio （SNR） than the current mean quantization algorithm, and the Normalized Cross-Correlation （NO has also a certain amount of improvement.

关 键 词：信息隐藏 隐蔽通信 均值量化 DWT 信噪比 归一化相关系数 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]