“Tilt Brush” is launched by Google, which enables users to paint sound. I think this project rather interesting because vision is still the more intuitive sense to human than other forms. Emotions can be expressed more clearly through visual effects. By converting sounds to images, users can understand the sound more.
The qualities of sound can be divided into volume, tone and tune, as images can be expressed by different colors, shapes and composition. I think the developers might have connect these qualities accordingly–use different qualities of sound to control their counterparts in images.
Information in vision can be more prominent than in hearing, so users might experience the sound more thoroughly.
Here is the link for the project.
The Tilt Brush by Google