Project supported by the National Natural Science Foundation of China (No. 60970148);the National High-Tech R&D (863)Program of China (No. 2011AA010704)
This paper presents a method to detect the quantization index modulation(QIM) steganography in G.723.1 bit stream.We show that the distribution of each quantization index(codeword) in the quantization index sequence h...
supported by the Brain Korea 21 Project in 2010,and the MKE(The Ministry of Knowledge Economy,Korea);the ITRC(Information Technology Research Center)support program(NIPA-2010-(C1090-1021-0010))
Speech coding techniques have been studied not truly to reduce the complexity and bit rate but also to improve the sound quality. CELP type vocoder, used as standard, supports the great stead quality even low bit rate...