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A CELP-speech information hiding algorithm based on Vector Quantization

  • Ji Xin Liu*
  • , Zhe Ming Lu
  • , Hao Luo
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen
  • Zhejiang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a speech information-hiding scheme that is integrated with the CELP (Coded Exited Linear Prediction) speech coding method. The G.729 codec (CSACELP) is used to test the efficiency of this scheme. The index-constrained method is applied for the secret information embedding. The selected bits of first-stage and residual vector indices during the Predictive Two-stage Vector Quantization procedure are modulated by the secret information bits. For the imperceptibility of this scheme, the quality of the watermarked speech signal can be controlled by adaptive embedding through referring to the original and watermarked speech. Experimental results show that this scheme can be effective and the distortion of the speech signal is trivial and imperceptible.

Original languageEnglish
Title of host publication5th International Conference on Information Assurance and Security, IAS 2009
Pages75-78
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
Event5th International Conference on Information Assurance and Security, IAS 2009 - Xian, China
Duration: 18 Aug 200920 Sep 2009

Publication series

Name5th International Conference on Information Assurance and Security, IAS 2009
Volume2

Conference

Conference5th International Conference on Information Assurance and Security, IAS 2009
Country/TerritoryChina
CityXian
Period18/08/0920/09/09

Keywords

  • Celp
  • Information hiding
  • Speech
  • Vector Quantization

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