语音隐藏的研究及实现

Research and implementation for speech information hiding

本文提出了一种基于伪装式信息隐藏安全技术的语音信息隐藏电话（SIHT）系统的研究和实现方法。给出了语音信息隐藏的模型,并进行了模拟仿真。SIHT采用基于DSP的嵌入式技术设计了相应的功能模块。它可以利用普通的模拟电话线路,经过公共电话交换网络（PSTN）,在不引起人们注意的普通通话中,通过系统建立的一条隐秘信道将保密信息顺利地传递到接收方。实验证明,SIHT可以在保证语音质量的条件下实现实时语音信息隐藏保密通信的功能。

Speech information hiding telephone (SITH) is a new steganography scheme based on information hiding security technique for hiding one piece of speech information data into another. It is designed for secure and covert communication when a speech is transmitted over the public switching telephone network (PSTN), which is different from secret telephone in information encryption and information hiding techniques. This paper proposes the research and implementation approach for SIHT, gives out SITH module, and deals with SITH system architecture. The overall system is designed in embedding method based on DSP.