A short history of hearing aid volume control
Before hearing aids, there were other methods used to help people with hearing loss to hear more clearly. A simple hand raised to the side of the ear to increase the gathering of sound has been with us since the beginning of time. Much later was the ear trumpet, which was invented in the 17th century. This usually metal device has a smaller end that is held to the ear and a wider end for capturing sound to help amplify anything that the listener wanted to hear. In the 18th century, the collapsible ear trumpet was invented. They were first commercially produced in the early 19th ...
