A hearing aid uses a built in microphone to make sounds louder so that you are able to hear more comfortably.Â Hearing aidsÂ are battery-operated and are usually worn in or around your ear. They are available in different shapes, sizes and types. In the UK, you can either get a hearing aid free from the National Health Service or buy one privately from a registered hearing aid dispenser.
a miniature electronic instrument that makes sounds louder. Sounds are picked up by a microphone, processed and amplified to accommodate the specific nature of the hearing loss, and directed to the wearer's ear. Hearing aids vary in style (completely-in-the-canal, in-the-canal, in-the-ear, behind-the-ear) and in technology (analog, digitally programmable, digital). Current hearing aid technology processes speech and environmental sounds to optimize speech understanding, and keep sound levels audible and comfortable.