An 8-32 kbit/s scalable wideband coder extended with MDCT-based bandwidth extension on top of a 6.8 kbit/s narrowband CELP coder.
Masahiro OshikiriHiroyuki EharaToshiyuki MoriiTomofumi YamanashiKaoru SatohKoji YoshidaPublished in: INTERSPEECH (2007)