This infographic from Bluebird Care provides a historical timeline of how the hearing aid has arrived in our time, from the Ear Trumpet to the ground breaking In-Ear Amplifiers.
[Click image for full size version]
This infographic from Bluebird Care provides a historical timeline of how the hearing aid has arrived in our time, from the Ear Trumpet to the ground breaking In-Ear Amplifiers.
[Click image for full size version]