The History and Technology of Modern Hearing Aids
Hearing aids today are quite hi-tech, far advanced from their humble beginnings. The first hearing aids that we know of were used in our ancient past and were merely carvings of the ears of animals which had an exceptionally good sense of hearing. As to how effective they were we do not know however, the principle of an animal’s ear stands good even today as it is large at one end in order to receive the sound and yet narrow at the other in order to deliver the sound more clearly and loudly. This theory was used through the 16th, 17th, 18th, 19th and even into the 20th century by way of ‘trumpets’. A trumpet was a hearing aid that had one narrow end which was inserted in the ear and a wide end which was help in front of the mouth of the person who was speaking, muck like a microphone works today.
The history of hearing aids
Originally, because of their convenient shapes, animal horns and large sea shells were used as trumpets but as time progressed trumpets were started to be made out of copper or bronze but the principle remained the same. During the 17th century and ever since, an alternative to the trumpet has been used and that is a fan like device behind the ear. The concept of the fan in an aid to assist hearing is that after it was discovered that bone can easily transmit sound vibrations, the fans are in contact with the bones at the back of the ear and they in turn pass to the brain, vibrations which are picked up by the fan.
Although since the invention or discovery of electricity and the development of the telephones, hearing aids have advanced greatly from their primitive origins, it is still the same principles which are used and that is sound vibrations must be received in some sort of receiver, amplified and then passed on to the inner ear or directly to the brain via bone. Due to the miniaturization of both receivers and amplifiers, hearing aids can now be very small and some which are placed in the ear canal may even be invisible to the untrained eye. The miniaturization of receivers and amplifiers also assists behind the ear hearing aids to be made far more efficient.
Today modern hearing aids
If you are perhaps an elderly person who is now in need of a hearing aid, you may find it confusing as to which type would specifically suit you. As this is understandable, some websites like the https://www.audika.dk/ website, offer free trials before you have to buy one and by making the most of these offers, you can ensure that you only have to buy one: the correct one for your own personal needs and requirements. Prior to offering you the free trial these websites will fully explain to you the advantages and disadvantages of each and so often the free trial is more of a confirmation that you are going to buy the correct type for your needs.