一种新颖的音频信息隐藏算法  

A Novel Audio Information Hiding Algorithm

作　　者：由守杰[1] 柏森[1] 曹巍巍[2] 

机构地区：[1]重庆通信学院,重庆400035 [2]信息安全国家重点实验室,北京100080

出　　处：《通信技术》2007年第12期280-282,共3页Communications Technology

基　　金：重庆市自然科学基金(CSTC2007BB2105)

摘　　要：文中提出了一种新颖的基于音频采样点倒置的信息隐藏算法。算法根据人耳对音频倒置不敏感和音频幅度值为正的采样点在总采样点中所占的比例比较稳定的特点,通过倒置的方法调整该比例的大小嵌入秘密信息。实验表明,含密音频不仅具有良好的不可感知性,而且对诸如噪声、低通滤波、重采样、Mp3压缩和GSM压缩编码等的攻击,具有较好的鲁棒性。A novel audio information hiding algorithm based on the audio sample dots inversion is proposed. Based on the features that audio sample dots inversion has little influence on the human hearing and that the percentage of the positive audio sample dots in a period of time is robust against some audio attacks, the secret information is embedded to the audio by adjusting the percentage of the positive audio sample dots. The adjustment is realized by inversing audio sample dots. Experimental results show that the watermarked audio has good imperceptibility and is robust against different kinds of attacks, such as noise adding, low-pass filtering, resampling, Mp3 compression and GSM coding.

关 键 词：信息隐藏 音频盲水印 采样点倒置 鲁棒性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]