Congenitally blind learn to see and read with soundscapes

Congenitally blind people have learned to ”see” and describe objects, and even identify letters and words, by using a visual-to-auditory sensory-substitution algorithm and sensory substitution devices (SSDs), scientists at Hebrew University and in France have found.
SSDs are non-invasive sensory aids that provide visual information to the blind via their existing senses. For example, using a visual-to-auditory SSD in a clinical or everyday setting, users wear a miniature camera connected to a small computer (or smart phone) and stereo headphones.
The images are converted into “soundscapes,” using an algorithm, allowing the user to listen to and then interpret the visual information coming from the camera. The blind participants using this device reach a level of visual acuity technically surpassing the criterion of the World Health Organization (WHO) for blindness