Global Standard for Wideband Speech Coding: ITU-T G.711.1 (G.711 wideband extension)
Shigeaki Sasaki, Takeshi Mori, Yusuke Hiwasaki, Hitoshi Ohmuro · NTT technical review · 2008
NTT has developed a scalable wideband speech coding method, whose core layer is ITU-T standard G.7, and has also acted as a leader of its standardization in ITU-T (International Telecommunication Union, Telecommunication Standardization Sector) since January 2007.As a result of the standardization activities, a new wideband speech coding method, proposed by NTT and four other organizations, was approved as ITU-T G.7. in March 2008.This article introduces the background and the process up to its approval and then describes the concepts, technical specifications, and quality evaluation of G.7..