2ITU-T. Recommendation G. 723. 1, Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbps [S]. 2006.
3XU Ting-ting, YANG Zhen. Simple and effective speech steganography in G. 723.1 low-rate codes[ C ]//Proc of Wireless Communications & Signal Processing. 2009 : 1-4.
4ITU-T. ITU-T Draft Recommendation P. 862, Perceptual evaluation of speech quality (PESQ) , an objective method for end-to-end speech quality assessment of narrowband telephone networks and speech codecs [S]. 2000.
5MAZURCZYK W,SZCZYPIORSKI K. Steganography of VoIP streams [C]//Lecture Notes in Computer Science, Vol. 5332. 2008:1001- 1018.
6HUANG Yong-feng, TANG Shang-yu, BAO Chun-lan. Research on the steganalysis of the compressed speech[J]. Journal of the lET Information Security,2006:4-6.
