论文信息 - Information Hinding Based on GSM Full Rate Speech Coding

Information Hinding Based on GSM Full Rate Speech Coding

A steganographic method is proposed to embed secret data in GSM full rate transcoding bit stream. Depending on the unequal importance with respect to speech subjective quality of encoded parameters and their individual bits, appropriate bits, which have relatively low importance for the quality of host speech, are chosen to embed secret data. The secret information can be anything such as another compressed speech or a text. The mean opinion score (MOS) of the stego-speech is around 3.5, satisfying the requirement of communication quality

Wang Shuozhong | Hu Licai

[1] John S. Collura,et al. MELP: the new Federal Standard at 2400 bps , 1997, 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[2] Methods for objective and subjective assessment of quality Perceptual evaluation of speech quality ( PESQ ) : An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs , 2002 .

[3] Andreas Spanias,et al. Speech coding: a tutorial review , 1994, Proc. IEEE.

[4] Huaiqing Wang,et al. Cyber warfare: steganography vs. steganalysis , 2004, CACM.