Scientists build mouse for the blind
Lines on a graph were represented by tones that would vary in pitch according to whether the line was rising or falling.
Several such tones could be used to represent different lines of the same graph as the person entered a “soundscape.”
“You can get across quite complex information just using sound,” he said, adding that the technique could even be of use to sighted people such as share traders who could be alerted on their mobile phones by a tone representing a move up or down.