The Ardente Hearing aid, London, England, 1920-1930
This Ardente hearing aid was made by R H Dent in Oxford Street, London. A product of the then new microphone and battery technology, this device amplified sounds in a much more convenient way than the earlier Victorian ear trumpet.
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A condition where the hearing in both ears in not functional to ordinary levels.
Glossary: hearing aid
A small electronic apparatus that amplifies sound and is worn in or behind the ear to compensate for impaired hearing.
An electrical device used to amplify electrical signals.