Lossless Steganography for Speech Communications
Naofumi Aoki · InTech eBooks · 2012
Transmitting supplementary data by steganography, new functions can be added to communications systems without changing conventional data format. Based on this concept, several applications have been proposed for enhancing the speech quality of telephony communications. These applications secretly transmit side information along with speech data itself for enhancing the performance of signal processing such as packet loss concealment and band extension (Aoki, 2003; Aoki, 2006; Aoki, 2007a; Aoki, 2012).