Hearing Aids and how they enable Hearing.
Hearing aids to people who have lost their ability to hear are extremely helpful. This tool is a very precious one because hearing loss is irreversible once it happens. Hearing aids are the only way for victims of hearing loss to hear the beautiful sounds of life has to offer. Hearing aids are an everyday accessory to some and others come across them on a daily basis but not all understand how they work. Before you can shed any light on hearing aids you need to look at hearing loss first.
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. The other common way that people lose their hearing ability is through exposure to very loud noises especially on a regular basis. Since this happens to be an environmental cause , people of young age could lose their hearing ability this way. Explosions and crashes have the ability to cause permanent hearing loss.
People working in industrial environments with a lot of noise need to have protective gear to protect their ears. Recurring sounds that area over seventy five decibels which is the safe volume limit will destroy your hearing ability as well. Losing your hearing will take a shorter time if you are exposed to 85 decibels and over. A human ear is made up of many parts that work in harmony to enable a person to hear through conversion of the sound waves into messages that can be interpreted by the human brain. The sound waves are first turned into electrical signals which can be received by the auditory nerve of the ear. Sound enters through the air canal to hit the ear drum which vibrates to send signals to the inner ear bone, the bones translates vibrations into ripples in a fluid of the cochlea. 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 microphone receives sounds from the outside world and turns them into digital signals for the microchip to process. Microchips can be customized so as to fit the user better, not that all hearing loss is not 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. Hearing aids come in different types in regard to function and needs of the user.
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