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Hearing Aids and how they enable Hearing.

Hearing aids to people who have lost their ability to hear are extremely helpful. The value of a hearing aid is just incomparable because hearing loss is irreversible This is the only way for many people to reconnect with the world through sound. Many have heard about hearing aids and some even use them but not all understand how they work to deliver sound. Before you can shed any light on hearing aids you need to look at hearing loss first.

The leading cause of hearing loss old age. 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. Since this happens to be an environmental cause , people of young age could lose their hearing ability this way. People have suffered permanent hearing loss after exposure to loud explosions and crashes.

People working in industrial environments with a lot of noise need to have protective gear to protect their ears. Recurrent sounds especially those over 75 decibels, the safe volume limit, will damage your hearing gradually. 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 in the cochlear fluid stimulate the hair cells of the inner ear that triggers chemicals generating an electrical signal that is then picked by the auditory nerve and transmitted to the brain in sounds that we understand.

Hearing aids are made of five parts ,a microphone, battery , receiver , microchip and amplifier. The microphone receives sounds from the outside world and turns them into digital signals for the microchip to process. The microchip can be customized to fit the needs of the user because not all hearing loss is the same. The work of the amplifier is to make the sounds louder and stronger, the volume is customizable to make the sounds more distinct and comfortable for 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.