Human interface and transmit frequency control for the through-air acoustic real-time high resolution vision substitute system.
Existing vision substitute systems are not useful as navigation system due to the limitation of spatial and time resolution. In this study we propose a transmit control method free from range aliasing for a high resolution acoustic vision substitute systems, which we previously proposed. We also examine a human-machine information transfer method with a vibrotactile stimulator array consisting of 13 &#215; 21 elements. It presents the target area of 30 degree &#215; 60 degree by the sampling interval of 1 degree at the center. The system presents range, direction, and surface topography of targets to the subject.
Taki
Hirofumi
H
Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University, Japan (phone: +81-75-753-3366; fax: +81-75-753-3342; e-mail: taki@aso.cce.i.kyoto-u.ac.jp).
Sato
Toru
T