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《Journal of China Institute of Communications》 2002-08
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Research and implementation for speech information hiding

WU Zhi-jun, NIU Xin-xin, YANG Yi-xian(Department of Communications, Civil Aviation University of China, Tianjin 300300, China; Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China)  
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.