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The Design Behind ... The Hearing-Aid

From dinner horns to hearing chairs to modern custom hearing-aids used today, audiologist Marshall Chasin takes us through the history and design evolution of the hearing-aid.
CBC Radio ·
In 1819, the King of Portugal had a special throne built to include handles shaped like horns to provide acoustics so he could hear. (Mike Krzeszak)
The Current3:48The Design Behind ... The Hearing Aid - Feb 11, 2015

From dinner horns to hearing chairs to modern custom hearing-aids used today, audiologist Marshall Chasin takes us through the history and design evolution of the hearing-aid. 

This segment was produced by The Current's Sarah Grant.

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