在小波域中实现的动态嵌入音频隐藏算法

Dynamic embedded audio hiding algorithm in wavelet domain

针对许多语音隐藏算法隐藏容量不大、嵌入点固定等问题,提出了一种新的语音隐藏算法。将隐蔽信息经过Logistics映射,在隐蔽信息中加入里所(RS)编码;将提升小波变换和奇异值分解应用于音频信息隐藏。实验表明:通过所提算法嵌入隐蔽信息后的音频文件不仅在隐蔽信息容量上有显著提高,且具有很好的透明性,同时也能抵抗一定的攻击。算法在隐藏容量、透明性和鲁棒性达到了较高的平衡。

Aiming at problems of hiding capacity is not large and embedded point is fixed that many speech hiding algorithms have,propose a new speech hiding algorithm.Hidden information is mapped by Logistics,and the RS encoding is added to the hidden information.Lifting wavelet transform and singnlar value decomposition are applied to audio information hiding.Experiments show that the audio file after embedded in hidden information through this algorithm not only has a significant improvement in the capacity of hidden information,but also has good transparency,and it can also resist certain attacks.The algorithm reaches a higher balance in hidding capacity,transparency and robustness.