AT&T (T) is planning to follow in T-Mobile’s footsteps by deploying HD Voice technology over its LTE network by the end of the year. Per AllThingsD, AT&T senior VP Kris Rinne said that “HD Voice is part of our voice over LTE strategy” and that the company would have it up and running sometime in 2013. HD Voice, which T-Mobile said would be available on its recently launched LTE network, is a type of voice technology that aims to deliver clearer voice calls and eliminate most background noise by using an algorithm that significantly increases the number of voice frequencies transmitted.