an electronic device that scans ordinary printed characters and produces combinations of sounds, enabling a blind reader to recognize the characters.
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British Dictionary definitions for optophone
a device for blind people that converts printed words into sounds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012