July 2, 2008

How Modern Hearing Aids Work

It might surprise you to know that hearing aids have actually been around for many years. In fact, the first hearing aids were really just conical devices which you had to hold up to your ear in order for someone to be able to speak to you. I'm sure you have seen pictures of these devices called "ear trumpets" which captured the sound and funnelled it directly into your ear.

Thankfully, modern hearing aid designs come in several different types that are very impressive in appearance and work with the latest technology. So let's take a look at how hearing aids work in today's world.

Modern hearing aids use small microphones to detect soft sounds in order to make them louder. They are able to do this with a really tiny microphone. The microphone receives the sound and then converts it into an electrical signal or a digital signal that will send data to a speaker which turns it into sound once again.

The settings that these microphones have are able to take into account the actual degree of hearing loss that the individual has as well as the environment that they are normally in. When you see the term environment, it pertains to the noise that is normally around you and how much of it is normal.

Is it possible that you are normally around high frequency noises? If you are around high frequency noises, do you need or want to hear them? Or, do you function in an environment that is quiet? It is important to let your audiologist know all of these answers in order to properly adjust the settings on your device. These days, there are three basic kinds of technology that are used to receive and convert the sound signals that are captured inside of hearing aids.

The analog hearing aid is the least advanced and also costs less than other types of hearing aids. The audiologist can adjust this hearing aid to control the volume as well as other specifications. The factory can also make the hearing aids custom for you as well so that you can adjust the volume or so that the volume can be controlled automatically.

The programmable analog is another type of circuitry found in modern hearing aids. These hearing aids are somewhat better than hearing aids than the analog adjustable because they are actually programmed by a computer. With these hearing aids, the audiologist is able to set different programs for sound capture and sound transmission to adjust to different situations of listening. The user of the hearing aid can also select the program to use with a remote control at any given time.

Digital programmable hearing aids are the most advanced as well as the most expensive. In the past, they were actually impossible and impractical because they were not made small enough, however that is no longer true. They incorporate a chip that processes the sound and then amplifies it according to the need. These usually work in an automatic manner so there is little need for any adjustment.

Hearing well today is so much easier thanks to the strides that have been made in this field.