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现今,移动通信网络已经发展到了第三代,随着3G网络的不断发展,研究3G网络隐蔽通信是十分必要的.语音编码过程中利用编码参数隐藏信息是现今的一个研究热点.基音周期是描述音源特征的一个主要参数,基于基音周期的修改较难检测的特点,在自适应码本搜索的过程中,提出一种在3G话音中利用基音周期参数隐藏信息的算法,使用该算法可以在3G通信的过程中嵌入隐秘信息.该算法可以抵抗基于浊音特性的语音压缩域隐写分析.仿真实验的结果表明该方法对合成语音质量的影响很小,具有良好的隐蔽信息传输性能.
Nowadays, the mobile communication network has developed to the third generation, with the continuous development of 3G network, it is necessary to study covert communication of 3G network.However, it is a hot research topic to hide information with coding parameters in speech coding.Parity cycle Based on the characteristics that the pitch period modification is hard to detect, an algorithm for using the pitch period parameter to hide information in 3G voice is proposed in the process of adaptive codebook search. The algorithm can be used in 3G The proposed algorithm can resist the steganalysis of speech compression domain based on the voiced speech.The simulation results show that the proposed method has little influence on the synthesized speech quality and has good hidden information transmission performance.