The science Behind Hearing Aids.
A hearing aid is a very important gadget to people who cannot hear naturally. Thinking about it the technology of the hearing aid is one of the most fortunate thing to happen to humanity because hearing loss is irreversible. For many people who have experienced hearing loss, the hearing aids are the only way for people to have a chance to hear again. Despite many people using the hearing aids, the truth is that not all understand how they work. To begin understanding hearing aids you have to begin with understanding hearing loss.
Hearing lose comes about with age as you would observe with many senior citizens. In fact as we go past the age of seventy five there is high likelihood that the hearing ability will have diminished in a way. Caution may have been given against exposure to loud noises, this is another way people lose their hearing ability. very young people can lose their hearing ability this way too. Loud explosions are responsible for permanent hearing loss.
Working in an environment with a lot of noise requires you to have some protective gear to shield you from the noise. Recurrent sounds especially those over 75 decibels, the safe volume limit, will damage your hearing gradually. As sounds exceed 85 decibels its takes an even shorter time to lose your hearing. The human ear is made up of several parts which work together to turn the sound waves into messages that the brains can decode. The sound waves are first turned into electrical signals which can be received by the auditory nerve of the ear. Sound waves first enters the ear canal and cause the ear drum to vibrate, the inner ear bone turns the vibrations into ripples in the cochlea fluid. The ripples then stimulate the hair cells in the inner ear which trigger some chemicals and that leads to generation of an electrical signal, the auditory nerve sends the signal to the brain and translates that into sounds we understands.
When you break it down any hearing aid is made up of a battery, microchip, receiver, amplifier and receiver. The hearing through a hearing aid begins by the microphone picking up sounds and turning them into digital sounds which the microchip processes. The microchip is a unit that can be customized to the user needs because not All hearing loss is the same. The amplifier makes the signals stronger but the volumes are customizable to fit the needs of the user. The receiver then takes the digital signals and turns them into vibrations that the ears can understand. There are different types of hearing aids that suit the user depending on the needs and serve specific roles.