Hearing aids use these parts to help direct sound into the ear and make it stronger. Hearing aids use batteries for power. They also have a microphone to pick up sound, an amplifier to make sound stronger and a speaker to send sound into the ear. Some hearing aids also have a volume control or a program button.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Thanks to generous benefactors, your gift today can have 5X the impact to advance AI innovation at Mayo Clinic.