The Current

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.
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)
Listen3:48

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.