In what is claimed to be a world’s first, a blind athlete, Oscar Widegren, has ran unassisted thanks to an experiment using only sound.
The sound technology underpinning this experiment is called hyper directional sound and was delivered by two speakers, which were placed over 160 feet away from Widegren’s starting position. In effect, the technology was used to create artificial running lines for Widegren through sound, which directed him in a straight line of running completely unassisted.
Widegren ran this wall of sound successfully at full speed, in near complete darkness in March in experiment that was designed to prove the accuracy of hyper directional sound technology.