Hard of hearing people use hearing aids so they hear sounds, such as voices, better. A hearing aid is not a new device but has been around for centuries but looks nothing like the hearing aids of today.

In the 1800's, people used a funnel like cone to amplify sound. They called this an ear horn or hear trumpet. Another type of hearing aid had earphones and a microphone that plugged into a desk but was certainly not portable. Hearing aids have come a long way since those days.

Studies show that one out of every ten Americans has some type of hearing problem. With today's technology, hearing aids have helped eliminate this problem. The new models of hearing aids today are most often very small and well hidden along with excellent sound quality.

Hearing aids come in three basic types, which are:

1. Conventional hearing aids - These hearing aids were the behind the ear original ones released for sale. You can adjust the volume up or down but if the individuals hearing loss level changes, the manufacturer must adjust this, which is inconvenient.

2. Digital hearing aids - It is not only the most convenient; it can help specific hearing problems. A health care professional will help with the decision on the most beneficial hearing aid and then adjust them to the user.

It is comfortable to wear and the level of sound adjusts itself automatically. The amplifier and microphone adjusts the digitally enhanced sound but they cost more than conventional and programmable hearing aids.

3. Programmable hearing aids - Technically, more advanced than conventional hearing aids, the volume adjusts itself.

4. Disposable hearing aids - Less expensive than technologically advanced hearing aids, it is similar to conventional hearing aids in sound quality. Their shelf life is very short at less than 40 days.

When shopping for a hearing aid, consult an ear doctor who will help you choose the best hearing aid for your needs, budget and lifestyle.