5.3.1 embedding scheme
    5.3.2 extraction scheme
  5.4 approach to hide secret speech in g.728
    5.4.1 embedding algorithm
    5.4.2 extraction algorithm
  5.5 experimental results and analysis
  5.6 summary
chapter 6 the g.729-based speech information hiding approach
  6.1 introduction to the g.729 coding standard
    6.1.1 algebraic codebook structure
    6.1.2 adaptive codebook
    6.1.3 g.729 coding scheme
  6.2 the acelp-based scheme of speech information hiding and extraction
    6.2.1 embedding scheme
    6.2.2 extraction scheme
  6.3 approach to hide secret speech in g.729
    6.3.1 embedding algorithm
    6.3.2 extraction algorithm
  6.4 experimental results and analysis
  6.5 summary
chapter 7 the gsm (rpe-ltp)-based speech information hiding approach
  7.1 introduction to the gsm (rpe-ltp) coding standard
    7.1.1 rpe-ltp coding scheme
    7.1.2 gsm coding scheme
  7.2 approach to hide secret speech in gsm (rpe-ltp)
    7.2.1 embedding algorithm
    7.2.2 extraction algorithm
  7.3 experimental results and analysis
  7.4 summary
chapter 8 covert communication based on the volp system
  8.1 introduction to the voip-based covert communication system
    8.1.1 introduction to the volp system
    8.1.2 an outline for volp steganography
    8.1.3 classifications of the embedding method
  8.2 modeling and realization of volp-based covert communication
  8.3 embedding secret speech into voip g.729 speech flows
    8.3.1 the cnt of g.729 parameters
    8.3.2 embedding approach based on matrix coding
    8.3.3 embedding procedure
    8.3.4 experimental results and analysis
  8.4 summary
chapter 9 design of real-time speech secure communication over pstn
  9.1 secure communication plan
    9.1.1 introduction
    9.1.2 requirements analysis
  9.2 design and realization of a secure communication system based on pc
    9.2.1 framework for design
    9.2.2 coding scheme selection
    9.2.3 multimedia programming
    9.2.4 system realization
  9.3 speech information hiding telephony (siht) based on pstn
    9.3.1 introduction
    9.3.2 description of the siht
    9.3.3 speech information hiding scheme
    9.3.4 siht module
    9.3.5 siht operating modes
    9.3.6 architecture of siht
  9.4 summary
references
index

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