The Experts below are selected from a list of 516 Experts worldwide ranked by ideXlab platform
Wei Yang - One of the best experts on this subject based on the ideXlab platform.
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LPC parameters substitution for Speech Information hiding
The Journal of China Universities of Posts and Telecommunications, 2009Co-Authors: Wu Zhijun, Wei YangAbstract:Abstract Information hiding techniques adopted in Secret communication should meet the requirements of high hiding capacity, real-time and high robustness. For the purpose of real-time Speech secure communication, an Information hiding algorithm based on the analysis-by-synthesis (ABS) Speech coding scheme is presented in this article. This algorithm substitutes Secret Speech data bits for linear predictive coefficients (LPCs) in linear predictive coding (LPC). Statistics show that the change of voiced signal track is slow and the codebook for LPCs vector is large in ABS coding scheme. Therefore, a new concept, filter similarity, is proposed to determine the LPC parameters for substituting with Secret Speech Information, and to generate multi-codebook for saving storage space to store Secret Speech Information. To achieve the best effects of Information hiding, a dynamic threshold is built to make an optimal trade-off among hiding-capacity, security, robustness, transparence and real time. Experiments show that the proposed approach meets the requirements of Information hiding and Secret communication Speech quality. The test results indicate that this approach reaches high hiding capacity with an excellent Speech quality and complicating speakers' recognition.
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ICIC (1) - Approach to hide Secret Speech Information in G.721 scheme
Lecture Notes in Computer Science, 2007Co-Authors: Lan Ma, Zhijun Wu, Wei YangAbstract:This paper presents an approach for Speech Information hiding based on G.721 scheme. This approach proposes an Analysis-By-Synthesis (ABS)- based Speech Information hiding and extracting algorithm, is called ABS algorithm, which form the theoretical basis for designing a secure Speech communication system. The ABS algorithm adopts a Speech synthesizer in a Speech coder. Speech embedding and coding are synchronous, i.e. fusing of Secret Speech Information data into Speech coding. Dynamic Secret Speech Information data bits can be embedded into original carrier Speech data, with high efficiency in steganography and good quality in output Speech. This method is superior to available classical algorithms on hiding capacity and robustness. This paper implements the proposed approach based on Speech coding scheme G.721 and the experiments show that this approach meets the requirements of Information hiding, satisfies the constraints of Speech quality for secure communication, and achieves high hiding capacity of 1.6Kbps with an excellent Speech quality and complicating speakers' recognition.
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approach to hide Secret Speech Information in g 721 scheme
International Conference on Intelligent Computing, 2007Co-Authors: Wei YangAbstract:This paper presents an approach for Speech Information hiding based on G.721 scheme. This approach proposes an Analysis-By-Synthesis (ABS)- based Speech Information hiding and extracting algorithm, is called ABS algorithm, which form the theoretical basis for designing a secure Speech communication system. The ABS algorithm adopts a Speech synthesizer in a Speech coder. Speech embedding and coding are synchronous, i.e. fusing of Secret Speech Information data into Speech coding. Dynamic Secret Speech Information data bits can be embedded into original carrier Speech data, with high efficiency in steganography and good quality in output Speech. This method is superior to available classical algorithms on hiding capacity and robustness. This paper implements the proposed approach based on Speech coding scheme G.721 and the experiments show that this approach meets the requirements of Information hiding, satisfies the constraints of Speech quality for secure communication, and achieves high hiding capacity of 1.6Kbps with an excellent Speech quality and complicating speakers' recognition.
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ICIC (1) - G.711-Based adaptive Speech Information hiding approach
Lecture Notes in Computer Science, 2006Co-Authors: Wei YangAbstract:This paper presents an adaptive LSB (Least Significant Bit) algorithm to embed dynamic Secret Speech Information data bits into public Speech of G.711-PCM (Pulse Code Modulation) for the purpose of secure communication according to energy distribution, with high efficiency in steganography and good quality in output Speech. It is superior to available classical algorithms, LSB. Experiments show that the proposed approach is capable of embedding up to 20 Kbps Information data of Secret Speech into G.711 Speech at an average embedded error rate of 10−5. It meets the requirements of Information hiding, and satisfies the secure communication Speech quality constraints with an excellent Speech quality and complicating speakers’ recognition.
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ABS-based Speech Information hiding approach
Electronics Letters, 2003Co-Authors: Wei Yang, Yi-xian YangAbstract:An approach for Speech Information hiding based on the analysis by synthesis algorithm is presented. This approach can embed dynamic Secret Speech Information data bits into original carrier Speech data, with good efficiency in steganography and good quality in output Speech. It is superior to classical algorithms, e.g., least significant bit, which can only embed fixed 1, 2 and 4 bit data into original carrier Speech individually.
Yi-xian Yang - One of the best experts on this subject based on the ideXlab platform.
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ABS-based Speech Information hiding approach
Electronics Letters, 2003Co-Authors: Wei Yang, Yi-xian YangAbstract:An approach for Speech Information hiding based on the analysis by synthesis algorithm is presented. This approach can embed dynamic Secret Speech Information data bits into original carrier Speech data, with good efficiency in steganography and good quality in output Speech. It is superior to classical algorithms, e.g., least significant bit, which can only embed fixed 1, 2 and 4 bit data into original carrier Speech individually.
Lan Ma - One of the best experts on this subject based on the ideXlab platform.
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ICIC (1) - Approach to hide Secret Speech Information in G.721 scheme
Lecture Notes in Computer Science, 2007Co-Authors: Lan Ma, Zhijun Wu, Wei YangAbstract:This paper presents an approach for Speech Information hiding based on G.721 scheme. This approach proposes an Analysis-By-Synthesis (ABS)- based Speech Information hiding and extracting algorithm, is called ABS algorithm, which form the theoretical basis for designing a secure Speech communication system. The ABS algorithm adopts a Speech synthesizer in a Speech coder. Speech embedding and coding are synchronous, i.e. fusing of Secret Speech Information data into Speech coding. Dynamic Secret Speech Information data bits can be embedded into original carrier Speech data, with high efficiency in steganography and good quality in output Speech. This method is superior to available classical algorithms on hiding capacity and robustness. This paper implements the proposed approach based on Speech coding scheme G.721 and the experiments show that this approach meets the requirements of Information hiding, satisfies the constraints of Speech quality for secure communication, and achieves high hiding capacity of 1.6Kbps with an excellent Speech quality and complicating speakers' recognition.
Hai-xin Duan - One of the best experts on this subject based on the ideXlab platform.
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An Approach to Hide Secret Speech Information
Journal of Shanghai Jiaotong University (science), 2006Co-Authors: Hai-xin DuanAbstract:This paper presented an approach to hide Secret Speech Information in code excited linear prediction (CELP)-based Speech coding scheme by adopting the analysis-by-synthesis (ABS)-based algorithm of Speech Information hiding and extracting for the purpose of secure Speech communication. The Secret Speech is coded in 2.4 Kb/s mixed excitation linear prediction (MELP), which is embedded in CELP type public Speech. The ABS algorithm adopts Speech synthesizer in Speech coder. Speech embedding and coding are synchronous, i. e. a fusion of Speech Information data of public and Secret. The experiment of embedding 2.4 Kb/s MEEP Secret Speech in G. 728 scheme coded public Speech transmitted via public switched telephone network (PSTN) shows that the proposed approach satisfies the requirements of Information hiding, meets the secure communication Speech quality constraints, and achieves high hiding capacity of average 3.2 Kb/s with an excellent Speech quality and complicating speakers' recognition.
Zhijun Wu - One of the best experts on this subject based on the ideXlab platform.
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ICIC (1) - Approach to hide Secret Speech Information in G.721 scheme
Lecture Notes in Computer Science, 2007Co-Authors: Lan Ma, Zhijun Wu, Wei YangAbstract:This paper presents an approach for Speech Information hiding based on G.721 scheme. This approach proposes an Analysis-By-Synthesis (ABS)- based Speech Information hiding and extracting algorithm, is called ABS algorithm, which form the theoretical basis for designing a secure Speech communication system. The ABS algorithm adopts a Speech synthesizer in a Speech coder. Speech embedding and coding are synchronous, i.e. fusing of Secret Speech Information data into Speech coding. Dynamic Secret Speech Information data bits can be embedded into original carrier Speech data, with high efficiency in steganography and good quality in output Speech. This method is superior to available classical algorithms on hiding capacity and robustness. This paper implements the proposed approach based on Speech coding scheme G.721 and the experiments show that this approach meets the requirements of Information hiding, satisfies the constraints of Speech quality for secure communication, and achieves high hiding capacity of 1.6Kbps with an excellent Speech quality and complicating speakers' recognition.