A hearing aid is an electronic device that is placed in the ear canal to help the user overcome a hearing problem. It consists of a microphone, an amplifier, and a loudspeaker. A prerequisite for its operation is a battery. The main reason that the prospective users choose this solution is not the reduced intensity of perceived sounds, but rather the difficulty they face in communicating with others since they cannot hear clearly.
The basic function of the earpiece is to increase the volume at the user’s existing hearing level, something old generation earpieces would do too. This meant that all sounds were increased in volume, whether noise or speech. Modern devices, which are constantly being improved, can distinguish the nature of sounds, giving a more natural result. In addition to choosing a suitable hearing aid, the clinical condition of the patient also plays a key role in the treatment of hearing loss.