WU Zhijun, CAO Haijuan, LI Douzhe. An Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving[J]. Chinese Journal of Electronics, 2015, 24(1): 157-165.
Citation: WU Zhijun, CAO Haijuan, LI Douzhe. An Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving[J]. Chinese Journal of Electronics, 2015, 24(1): 157-165.

An Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving

Funds:  This work is supported by the National Natural Science Foundation of China (No.61170328, No.U1333116), Key Project of Tianjin Natural Science Foundation (No.12JCZDJC20900), Civil Aviation Science and Technology Innovation Fund (No.MHRD20130217), Fundamental Research Funds for the Central Universities of CAUC (No.3122013P007, No.3122013D007, No.3122013D003), and Research Laboratory Construction Funds of CAUC in 2014-2016.
  • Received Date: 2013-06-01
  • Rev Recd Date: 2014-06-01
  • Publish Date: 2015-01-10
  • 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 Mix-excitation 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.
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