A system for enabling blind people to identify landmarks: the sound buoy.
This paper describes a set of low-cost sound beacons. The paper introduces the problem area that motivated the work, considers alternative solutions and describes the radio triggered solution adopted. The paper discusses further developments to make the system suitable for indoor as well as external use.
Blenkhorn
P
P
Department of Computation, University of Manchester Institute of Science and Technology (UMIST), UK.
Evans
D G
DG
D000162:Acoustics; D001766:Blindness; D006801:Humans; D012682:Sensory Aids