A fast search method of algebraic codebook by reordering search sequence

Ha, Nam Kyu

doi:10.1109/icassp.1999.758052

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…In other words, as the embedding rate rises, the FCI values would be more evenly distributed. However, the previous study [19] has suggested that the pulse positions usually have different appearance possibilities, because of their unequal importance. Therefore, we could deduce that the steganographic operation would inescapably change the distribution of pulse positions, which can be accordingly considered as an effective feature for steganalysis.…”

Section: Long-time Distribution Feature Of Pulse Positionsmentioning

confidence: 97%

Steganalysis of analysis‐by‐synthesis speech exploiting pulse‐position distribution characteristics

Tian

Chang

et al. 2016

Security Comm Networks

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Steganography in low bit-rate speech streams is an important branch of Voice-over-Internet Protocol steganography. From the point of preventing cybercrimes, it is significant to design effective steganalysis methods. In this paper, we present a support-vector-machine-based steganalysis of low bit-rate speech exploiting statistic characteristics of pulse positions. Specifically, we utilize the probability distribution of pulse positions as a long-time distribution feature, extract Markov transition probabilities of pulse positions according to the short-time invariance characteristic of speech signals, and employ joint probability matrices to characterize the pulse-to-pulse correlation. We evaluate the performance of the proposed method with a large number of G.729a-encoded speech samples and compare it with the state-of-the-art methods. The experimental results demonstrate that our method significantly outperforms the previous ones on detection accuracy, false positive rate, and false negative rate at any given embedding rates or with any sample lengths. Particularly, this method can successfully detect steganography employing only one or a few of the potential cover bits, which is hard to be effectively detected by the existing methods.

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Section: Long-time Distribution Feature Of Pulse Positionsmentioning

confidence: 97%

Steganalysis of analysis‐by‐synthesis speech exploiting pulse‐position distribution characteristics

Tian

Chang

et al. 2016

Security Comm Networks

View full text Add to dashboard Cite

show abstract

“…The robust P M F procedure reduces the transmission rate and the coding complexity of the speech coder. Following stage would be to decrease the computation time of the fixed codebook search [9].…”

Section: Discussionmentioning

confidence: 99%

Fast pitch modelling for CS-ACELP coder using fermat number transforms

Madre¹,

Baghious²,

Azou³

et al.

Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Copyright

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Maximum-take-precedence ACELP: a low complexity search method

Chen

Yang²

2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221)

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A fast search method of algebraic codebook by reordering search sequence

Cited by 9 publications

References 5 publications

Steganalysis of analysis‐by‐synthesis speech exploiting pulse‐position distribution characteristics

Steganalysis of analysis‐by‐synthesis speech exploiting pulse‐position distribution characteristics

Fast pitch modelling for CS-ACELP coder using fermat number transforms

Maximum-take-precedence ACELP: a low complexity search method

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