基于双声道信息相关性的音频文件可逆水印算法  

Dual-Channel Information Correlation Based Audio File Reversible Data Hiding

作　　者：侯金程 HOU Jincheng(Linyi Vocational University of Science and Technology,Linyi 276000,China)

机构地区：[1]临沂科技职业学院,山东临沂276000

出　　处：《电声技术》2023年第10期12-15,共4页Audio Engineering

摘　　要：本文提出一种基于双声道信息相关性的音频文件可逆水印隐藏算法,通过生成二维稀疏误差平面提高音频文件的可逆水印隐藏性能。本算法利用单声道目标音频点上下文间的一致性关系设计误差预测算法,提高误差预测精度。利用相同时刻双声道音频文件变化的一致性关系,构建近似预测误差对。基于音频文件单声道音频点之间的时间相关性和双声道之间的空间相关性,构建陡峭分布的二维预测误差直方图。根据预测误差二维直方图的分布特性自适应嵌入敏感信息,在提高嵌入容量的同时,降低载体音频文件失真。实验结果表明,当嵌入大量信息后,本方法具有更优的可逆水印隐藏性能和更高的音频保真度。This paper proposes a reversible watermark hiding algorithm for audio files based on the correlation of two-channel information,which improves the reversible watermark hiding performance of audio files by generating two-dimensional sparse error planes.This algorithm designs an error prediction algorithm by using the consistency relationship between the contexts of mono target audio points to improve the accuracy of error prediction.An approximate prediction error pair is constructed by using the consistency relationship of two-channel audio file changes at the same time.Based on the time correlation between monophonic audio points of audio files and the spatial phase between two channels,a two-dimensional prediction error histogram with steep distribution is constructed.According to the distribution characteristics of two-dimensional histogram of prediction error,sensitive information is embedded adaptively,which can improve the embedding capacity and reduce the distortion of carrier audio files.Experimental results show that this method has better reversible watermark hiding performance and higher audio fidelity when a large amount of information is embedded.

关 键 词：可逆水印隐藏 二维直方图 预测误差 音频文件 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]