The Voice Peering Fabric (VPF) changed the landscape of the telecom industry has changed even more drastically by moving all telephone calls into the IP domain, which delivers higher quality audio experiences than public switched telephone network PSTN and makes high-definition (HD) voice possible.

The most recent company to off this feature is Bharti Airtel (News - Alert), a telecommunications services provider with operations in 20 countries across Asia and Africa, has launched the mobile HD voice service for its subscribers in Africa. Mobile HD voice enables high-quality voice calls because it reduces background noise often heard on a regular call and is drastically clearer than regular voice.

Mobile HD Voice is based on AMR (Adaptive Multi Rate) Wideband technology (W-AMR) operates with nine different bit rates, providing high-quality voice calls. Compared to the current narrowband speech codec, the W-AMR speech-compression algorithm doubles voice bandwidth and produces better sounding results.

Officials with Bharti Airtel (News - Alert) pointed out that HD voice is the most significant improvement in voice communications in the past two decades, and said that Mobile HD voice offers crystal clear audio quality and will enhance user experience on Airtel mobile networks.

“Surveys confirm that customers place a high value on HD Voice”, said Andre Beyers, the chief marketing officer, Airtel Africa, in a statement.

Beyers said that the new service will enrich end-user experience for Airtel subscribers.

Thanks to this, Airtel customers on 3G networks will experience a significant improvement in their voice communications as the new service will enable them to hear better in noisy environments.

To enjoy the maximum benefits of this new technology, all that is needed is an HD-Voice compatible mobile phone by both end users. Improvements in call quality can also be perceived when using an HD voice-enabled phone to call a non-HD Voice phone.

Airtel has become the third operator to launch a mobile HD voice service in Africa. The telecommunications company aims to make HD voice a reality on the continent, where further launches are to be scheduled to take place later this year.