Using low-rate compressed speech coding for large-capacity steganography is always a big challenge due to its low redundant information. To overcome this challenge, we propose a method of embedding and extracting steganography in low-rate speech coding using three-dimensional Sudoku matrix. Analysis shows that this method can enhance the concealment of steganographic information and improve the steganography capacity of low-rate speech coding. The experimental results showed that using the current typical low speech coding standard G.723.1 achieved a steganographic capacity of 200 bit/s and a reduction of less than 10% in the sensory evaluation value of the speech quality of the coded speech.
CITATION STYLE
Yang, Z., Peng, X., & Huang, Y. (2018). A sudoku matrix-based method of pitch period steganography in low-rate speech coding. In Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST (Vol. 238, pp. 752–762). Springer Verlag. https://doi.org/10.1007/978-3-319-78813-5_40
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