8 kbit/s～32 kbit/s Wideband Codec Bitstream Interoperable with G.729:ITU-T G.729.1
Yang Zhi-ling · Journal of Military Communications Technology · 2011
The principle of embedded wideband speech and audio codec ITU-T G.729.1 was introduced.G.729.1 can operate at 12 different bit rates from 32 kbit/s down to 8 kbit/s with wideband quality starting at 14 kbit/s.This coder is a bitstream interoperable extension of ITU-T G.729 based on three embedded stages: narrowband cascaded CELP coding at 8 kbit/s and 12 kbit/s,time-domain bandwidth extension(TDBWE) at 14 kbit/s,and split-band MDCT coding at 16 kbit/s and above.