基于卷积和抖动调制的音频数字水印算法  

Audio digital watermarking algorithm based on convolution and dither modulation

作　　者：吴秋玲 曲爱妍 黄丹丹[1] WU Qiu-ling;QU Ai-yan;HUANG Dan-dan(School of Cyber Security,Jinling Institute of Technology,Nanjing 211169,China;College of Command and Control Engineering,Army Engineering University of PLA,Nanjing 210007,China)

机构地区：[1]金陵科技学院网络安全学院,江苏南京211169 [2]中国人民解放军陆军工程大学指挥控制工程学院,江苏南京210007

出　　处：《计算机工程与设计》2023年第9期2593-2600,共8页Computer Engineering and Design

基　　金：金陵科技学院高层次人才科研启动基金项目(jit-b-201918);国家自然科学基金项目(11601202);江苏省高校自然科学基金项目(20KJB110004)。

摘　　要：为增强鲁棒性和透明性,提出一种基于卷积和抖动调制的音频水印算法。以浊音帧中能量最大的子帧为标记设计一种同步机制以自动定位水印所在位置。利用卷积运算构建一个具有稳定特性的特征量,通过量化和抖动调制将水印嵌入特征量。实验结果表明,该算法可实现水印的盲提取,能够抵御多种攻击类型,在86 bps的隐藏容量下信噪比可达26 dB以上,与同类算法相比具有更强的鲁棒性和更高的透明性,且隐藏容量越小,透明性和鲁棒性越好。To enhance robustness and transparency,an audio watermarking algorithm based on convolution and dither modulation was proposed.The sub-frame with the largest energy in the voiced frame was used as a mark to automatically locate the position of the watermark.Eigenvalue with stable characteristic was designed using the convolution operation and in which the watermark was embedded through quantization and dither modulation.Experimental results show that the proposed algorithm achieves blind extraction and resists multiple attack types.The signal-to-noise ratio reach more than 26 dB at the payload capacity with 86 bps.It shows stronger robustness and higher transparency than other algorithms.The smaller the payload capacity,the better the transparency and robustness.

关 键 词：音频水印算法 卷积 抖动调制 盲提取 同步机制 鲁棒性 透明性 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]