Sound triggers the visualization of colors and colored geometric shapes.

​

Individuals rarely agree on what color a given sound is. However, when larger samples are studied, consistent trends can be found, such that higher pitched notes are experienced as being more brightly colored and lower pitched notes tend to be darker.



There are two main Subcategories 

​

1. Narrow Band: Music elicits different shades, hues, and brightness of colors relative to the tones, notes or even instrument played. 
2. Broad Band: Individuals see colors from hearing ordinary sounds i.e. ringing of alarm clocks, people walking, or construction.

 

Colors have been reported to move in and out of the synesthetes field of vision depending on the volume of the music.