I went to the California academy of sciences this summer in San Francisco. Its a fairly new museum with highly interactive exhibits.
One exhibit in particular was called the Color of Life. It allowed users to pluck a string of color, and a sound would emit. Through this interaction, guests could “hear” color and play a medley based on their mood. I admired this project because it allowed an intangible feeling of sound for color. I thought the interaction was especially memorable because it engages users to think beyond what a color normally is deemed as.
I suppose the algorithms used for it were simple, if a string is plucked, emit this sound.