Hearing Aids and how they enable Hearing.
Hearing aids to people who have lost their ability to hear are extremely helpful. 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. Hearing aids are an everyday accessory to some and others come across them on a daily basis but not all understand how they work. But before that you have to look at what brings About their need which is hearing loss.
Losing your hearing ability comes with the old age. Upon approaching the age of seventy five there is a fifty percent chance that your hearing ability will deteriorate. The other common way that people lose their hearing ability is through exposure to very loud noises especially on a regular basis. Losing your hearing ability this way affects even people of young age. People have suffered permanent hearing loss after exposure to loud explosions and crashes.
Working in an environment with a lot of noise requires you to have some protective gear to shield you from the noise. If you expose yourself to volumes exceeding seventy five decibels for prolonged periods of time you are at risk of losing your hearing because that is the safe limit. Losing your hearing will take a shorter time if you are exposed to 85 decibels and over. The human ear is composed of several different parts which work together to convert the sound waves into messages that the human ear can make interpretations. 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.
There are five essential parts of a hearing aid a receiver, microchip, battery , amplifier and microphone. 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 then takes the digital signals and makes them louder and stronger, the volume at which the sounds can be received can be altered to the comfort of the user. The work of the receiver is to turn the digital signals into vibrations that the ear can understand. There are different types of hearing aids that suit the user depending on the needs and serve specific roles.