The human civilization has been using hearing devices for hundreds of years now. Hearing Aids have been a part of the life of many people who have problems related to hearing for more than 200 years now. However, the production of hearing aids in large numbers started only in 1800s. With new technologies rolling out of the shelf every single day, better and more efficient hearing aids were manufactured and eventually they became more comfortable, more durable, easy to use and they have reduced in size with every passing year. Even the sound quality of the hearing aids has improved dramatically over time.
The ever-increasing consumer demand and the technological advancements have together made it possible to introduce various features into the hearing aids so that each individual customer is satisfied by choosing the right device from amongst the myriad of hearing aids available in the market. Nevertheless, have you ever given it a thought that how do these devices actually work? First, we should know that there are different levels of hearing imparity, which require different types of hearing aids. Several microphones in the hearing aid capture sound from various regions and convert it into electrical signals. An amplifier then increases the strength of these signals depending upon the level of imparity of the person. The receiver then converts this amplified electrical signal into sound waves, which is than directed to the ear of thee person through a speaker.
The hearing aids work on button batteries and some can also work on solar energy. Other types of programmable hearing aids contain computer chips to perform various functions. The volume key on the hearing aid is used to increase or decrease the volume of the speaker depending upon the noise level around the person. The different types of hearing aids are behind the ear, In the ear, in the canal and body worn type of hearing aid.
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