Abstract
Blind persons mostly depend on white sticks or dogs while walking in urban areas, although there are acoustic signs signals at some crossings. One conceivable way to facilitate their walking is to guide them along a walking path by means of sound signals. Few studies, however, have been made of the effects of such signals on the walking of the blind. This paper analyses the results of various experiments conducted on three kinds of walking –straight walking, turning, and obstacle avoidance walking- in order to find out the basic features of the effects of sound signals on the walking of the blind.