The demonstration was said to achieve HD voice quality with HD video.
Operators presently deploy AMR-WB (Adaptive Multi-Rate Wideband, 7 kHz audio bandwidth) in conjunction with VoLTE, as recommended by The GSMA to improve their voice quality to HD voice.
The Enhanced Voice Services (EVS) codec is said to enable an audio bandwidth of 16KHz, claiming to more than double the bandwidth of HD voice and AMR-WB.
“4G mobile communications can deliver greater capacity, shorter latency, and together with the introduction of EVS Full HD Voice, will lead to a brand-new voice user experience that will popularise these new generation networks,” said TIAN WANG, director, Huawei Media Lab.
