Oticon hearing aid center.Chennai. Alta2 – for active communication A great hearing solution is one that will give you clear speech understanding, ensure you don’t feel tired at the end of the day and deliver sound that sounds natural to you. Alta2 will give you all this in the most discreet devices possible. Alta2 comes with every one of Oticon’s BrainHearing™ technologies. These technologies work together to give you excellent sound quality – in all types of situations.