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optophone

mechanical device

Learn about this topic in these articles:

Hausmann

In Raoul Hausmann
…visual, he invented the “optophone,” a mechanism by which to convert visible forms into sound, for which he got a patent in 1935. At the outbreak of the Spanish Civil War in 1936, Hausmann and Mankiewitz left Spain, first stopping in Zürich and then going to Prague and Paris.…
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