A Steganography Method for G.729a Speech Coding

Fufang Li, Binbin Li, Liangchen Liu, Yuanyong Feng, Lingxi Peng

Table 6 G.729a encoding hidden effects per second

Hidden quantity Hiding rate PESQ average percentage PESQ reduction percentage 200 bits per second 2.5% 94.69% 5.31% 300 bits per second 3.75% 92.05% 7.95% 400 bits per second 5% 83.64% 16.36% 500 bits per second 10% 75.24% 24.76%