It is not possible to pay attention to what is around you all the time. It is even harder for people who have troubles in hearing. The sounds produced seem so muffled, and like they are coming from far away. The voices, somehow, cannot be deciphered. And, some of the hearing aids do nothing but amplifying sound, so, even the unwanted noise is amplified. The Phonak hearing aids here, is meant to make listening a easier process for people suffering from hearing defects.