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About: Optophone     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:VisualCommunication106873252, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatAuditoryDisplaysyago:Abstraction100002137yago:Communication100033020yago:Demonstration106879180yago:Display106879521deviceyago:VisualCommunication106873252 New Facet based on Instances of this Class

The optophone is a device, used by the blind, that scans text and generates time-varying chords of tones to identify letters. It is one of the earliest known applications of sonification. Dr. Edmund Fournier d'Albe of Birmingham University invented the optophone in 1913, which used selenium photosensors to detect black print and convert it into an audible output which could be interpreted by a blind person. The Glasgow company, Barr and Stroud, participated in improving the resolution and usability of the instrument.