noun
- Plural of audiphone; early hearing aid devices that amplified sound through bone conduction or acoustic transmission.
Usage: historical; chiefly used in late 19th and early 20th century contexts
Examples
- The museum displayed a collection of vintage audiphones from the 1890s.
- Before modern hearing aids, audiphones were among the first devices designed to help people with hearing loss.
- Early audiphones relied on mechanical amplification rather than electronic components.