The sound of hearing aids has significantly changed and improved over the years as our understanding of hearing loss, listening problems and cognitive processes has increased. The hearing aids that are widely known and available today do not compare to hearing aids from the 1970’s. From analogue linear aids with volume control from the 1990’s to signal processing and BrainHearing, technology has significantly advanced. BrainHearing involves providing the brain all the acoustic information needed so it can make maximal use, or decode the auditory information.

The introduction of the Oticon Opn in 2016 lead to the abandonment of the idea of limiting the sound by prioritizing sound coming in from the front while diminishing sounds from other directions. The Oticon More is another present and prime example of the significant development of aids. The sound from this hearing aid’s microphones is unceasingly examined to estimate how complex the sound image is in comparison with the user’s listening needs. The listening need is previously determined by a variety of factors such as level of hearing loss, age and individual preference. This therefore aims to present the user with a sound that is as clear and uninterrupted as possible. Artificial intelligence is also used to provide clarity; a neural network has been trained with a large diversity of different sounds and scenes in the development of the Oticon More.