Title
Universal steganography model for low bit‐rate speech codec
Abstract
Low bit-rate speech codec offers so many advantages over other codecs that it has become increasingly popular in audio communications such as mobile and Voice over Internet Protocol (VoIP) communications, and thus, researching steganography in low bit-rate speech codec is of important significance. In this study, we proposed a universal VoIP steganography model for low bit-rate speech codec that uses the PESQ deterioration rate and the decoding error to automatically choose a data-embedding algorithm for each VoIP bitstream, which enables ones to achieve covert communications using a low bit-rate speech codec efficiently and securely. Because no or little attention has been paid to steganography in Internet Speech Audio Codec, it was chosen as the test codec to verify the effectiveness, security, and practicability of the proposed steganography model. The experimental results show that, with the proposed steganography model, it achieved the average PESQ deterioration rate of 4.04% (less than 5%, indicating strong imperceptibility) and a high data-hiding capacity up to 12bits/frame (400bits/s, three times larger than other methods), and the proposed steganography model could effectively resist the latest steganalysis. Copyright (c) 2015 John Wiley & Sons, Ltd.
Year
DOI
Venue
2016
10.1002/sec.1183
SECURITY AND COMMUNICATION NETWORKS
Keywords
Field
DocType
Steganography model,VoIP,iSAC
Steganography,Audio codec,Speech coding,Adaptive Multi-Rate audio codec,Computer security,Computer science,Speech recognition,Steganalysis,Enhanced Variable Rate Codec,Codec,PESQ
Journal
Volume
Issue
ISSN
9
8
1939-0114
Citations 
PageRank 
References 
6
0.47
13
Authors
4
Name
Order
Citations
PageRank
Shanyu Tang121317.47
qing chen260.47
wei zhang360.47
Yongfeng Huang471392.06