基于音频特征和逼近信号统计特征的数字零水印算法  

The Audio Zero Watermark Algorithm Based on Audio Features and Statistical Feature of Approximation Signal

作　　者：杨得国[1] 姜金娣[1] 曹文泉[1] 曾玥[1] 万红娟[1] 

机构地区：[1]西北师范大学数学与信息科学学院,甘肃兰州730070

出　　处：《江西师范大学学报（自然科学版）》2011年第6期633-636,645,共5页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(61165002)资助项目

摘　　要：提出了一种基于音频特征和逼近信号统计特征的零水印算法.实验结果表明,该算法能根据音频自身的特点寻找到适合用于嵌入水印的音频帧,实现水印信息的嵌入、提取和盲检测,在不改变听觉质量的同时降低了计算量,提高了水印的鲁棒性.An zero-digital watermark algotithm based on audio features and statistical feature of approximation signal is presented. Experimental results show that the proposed algorithm can find the suitable audio frames to embed watermark according to the characteristics of the audio signal and can achieve watermark information embedding, extraction and blind detection. Reducing the computation and improving the robustness of watermarking system without losing auditory quality.

关 键 词：音频数字水印 零水印 短时能量 过零率 统计特征 线性伸缩恢复 

分 类 号：O626.4[理学—有机化学]