Use of sound amplification to teach deaf childreu and other persons of deficient bearing was greatly increased by the birth of radio.. One,of the latest installations, adapted especially for teaching children in a classroom, is so connected that several pupils can listen at one time from their seats. Music or voice is picked up electrically from a record in the main cabinet, which uses no batteries, but operates from the lighting socket. This permits evenservice at all times, which is an important feature.. .
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Bibliographic details
Evening Post, Volume CVIII, Issue 42, 17 August 1929, Page 19
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83Untitled Evening Post, Volume CVIII, Issue 42, 17 August 1929, Page 19
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