Projective display of document information by parametric sound beam
DOI
オープンアクセス
説明
For the input work of sentences by the blind, the location information of cursor is necessary. We have tried to display document information by the sound(voice). The sound we used is secondary one derived from parametric array driven by an ultrasonic range signal. We got the movable sound source using the sound and projecting it on the wall just like torch light. The basic characteristics show the possibility of the document information display by this method.