From physiological and psychological points of view we lack understanding of age-related decline in the functioning of the inner ear, ageing brain, perception of sound and their connection with communication problems. There is a need to understand better through advanced measurements and simulations the link between hearing and brain, auditory and cognitive processing and mechanisms of tinnitus. Research is needed to develop 3D media technology and artificial sound sources for ageing society including the use of positive sounds to support brain function, healthy aging and aural diversity community.