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首页> 外文期刊>Chinese Journal of Electronics >An Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving
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An Approach of Steganography in G.729 Bitstream Based on Matrix Coding and Interleaving

机译:基于矩阵编码和交织的G.729比特流中的隐写方法

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摘要

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.
机译:本文提出了一种基于语音信息隐藏技术的互联网安全通信方法。在这种方法中,通过采用覆盖码和交织技术,提出了将2.4Kbps低比特率混合激励线性预测(MELP)语音嵌入G.729编码语音的算法。对G.729源编解码器中的参数进行了抗噪能力(CNT)分析,并选择携带秘密语音数据,因为这些参数对重构语音的质量影响较小。实验结果表明,所提出的隐写算法不仅获得了高达2.4Kbps的高数据嵌入率,而且具有更好的隐蔽性,表明该算法可用于高数据嵌入能力的隐藏,并且可以取得良好的效果。

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