Open AccessAn Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving
Author(s) -
Wu Zhijun,
Cao Haijuan,
Li Douzhe
Publication year - 2015
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2015.01.026
Subject(s) - interleaving , computer science , speech coding , speech recognition , codec , steganography , bitstream , embedding , information hiding , linear prediction , full rate , algorithm , coding (social sciences) , decoding methods , artificial intelligence , telecommunications , mathematics , statistics , operating system
This paper proposes an approach of secure communication through the Internet based on the technology of speech information hiding. In this approach, the algorithm of embedding a 2.4Kbps low‐bit‐rate Mixexcitation linear prediction (MELP) speech into G.729 coding speech is presented by adapting the techniques of covering code and the interleaving. The parameters in G.729 source codec are analyzed in the Capability of noise tolerance (CNT) and selected to carry secret speech data because these parameters have less impact on the quality of being reconstructed speech. Experiment results show that the proposed steganography algorithm not only gained a high data embedding rate up to 2.4Kbps but also achieved better imperceptibility, which indicates that the algorithm can be used for high data embedding capacity hiding and can achieve good effect.