The Main Advantages of HD Services in Mobile are:
1 Mobile HD voice enables high quality voice calls because it reduces the background noise often heard on a regular call.
2 Compared to the current narrow-band speech codec, device, the W-AMR speech-compression algorithm doubles voice bandwidth and produces better results.
3 HD services are also based on Adaptive Multi Rate wideband technology, which operates with nine different bit rates, providing high quality voice calls.
