Hopefully additional synesthetic devices such as smell-o-vision spectacles are in the pipeline as well. New Scientist writes:
If you can hear, you probably take sound for granted. Without thinking, we swing our attention in the direction of a loud or unexpected sound – the honk of a car horn, say.
Because deaf people lack access to such potentially life-saving cues, a group of researchers from the Korea Advanced Institute of Science and Technology (KAIST) in Daejeon built a pair of glasses which allows the wearer to “see” when a loud sound is made, and gives an indication of where it came from.
An array of seven microphones, mounted on the frame of the glasses, pinpoints the location of such sounds and relays that directional information to the wearer through a set of LEDs embedded inside the frame. The glasses will only flash alerts on sounds louder than a threshold level, which is defined by the wearer.