Airtel starts HD voice service in Africa

Bharti Airtel has launched high quality voice service for its subscribers in Kenya, Rwanda, Malawi and Nigeria in the African sub-continent.

What is HD voice and how is it better?

Mobile HD voice is high quality voice service which enables high quality voice calls as it cuts down the background noise often heard on a regular call. This service is based on AMR (Adaptive Multi Rate) wideband technology (W-AMR) which operates with nine different bit rates, providing high quality voice calls. Compared to the current narrow-band speech codec device, the W-AMR speech-compression algorithm doubles voice bandwidth and produces better results.



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