基于DCT算法的音频信息隐藏研究

Research of Audio information Hiding Based on DCT

音频信息隐藏技术是一种有效的数字版权保护和信息安全技术。在介绍基于DCT的音频信息隐藏原理的基础上,借助MATLAB软件,利用设计的低通滤波器进而获取信息隐藏载体的音频低频部分,再将欲隐藏的信息替换掉载体音频的低频部分的奇数段中的DCT系数,进而实现音频信息的隐藏,最后还原了被隐藏的信息,证明了算法的可行性。

Audio information hiding is an effective digital copyright protection and information security technology.The principle of audio information hiding based on DCT algorithm was introduced,the low pass filter was designed with the MATLAB software in order to get low frequency part of audio information for formation hiding.The DCT coefficients of Odd Section of low frequency part of carrier audio were replaced by hidden information.Hiding information has realized and restored by the DCT algorithm with the MATLAB software from the audio information.