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- W106896688 abstract "The VoIP system is one of the most widely used voice communications systems for the delivery of voice communications and multimedia sessions over the Internet by using the Internet Protocol (IP). G.729 is the speech coding scheme in VoIP. In this chapter, a model for VoIP-based covert communications is put forward based on the analysis of the characteristics of VoIP, and an approach of embedding secret speech information into VoIP G.729 speech flows is proposed based on matrix coding. In the approach, 2.4 kbps MELP speech is used as secret speech, and G.729 coding speech is used as the public carrier. The implementation of embedding and extraction algorithms is presented. Experimental results show that this approach achieves a high data embedding rate of up to 2.4 kbps with nice imperceptibility and low complexity." @default.
- W106896688 created "2016-06-24" @default.
- W106896688 creator A5083430909 @default.
- W106896688 date "2015-01-01" @default.
- W106896688 modified "2023-09-23" @default.
- W106896688 title "Covert Communication Based on the VoIP System" @default.
- W106896688 doi "https://doi.org/10.1016/b978-0-12-801328-1.00008-2" @default.
- W106896688 hasPublicationYear "2015" @default.
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