The science Behind Hearing Aids.
A hearing aid is a very important gadget to people who cannot hear naturally. This tool is a very precious one because hearing loss is irreversible once it happens. 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. There is a fifty percent chance that when you attain the age of seventy five and over your hearing loss will not be as sharp as it has been in the earlier years. The other common way that people lose their hearing ability is through exposure to very loud noises especially on a regular basis. very young people can lose their hearing ability this way too. 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. As sounds exceed 85 decibels its takes an even shorter time to lose your hearing. 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 converted into electrical signals that are received by the auditory nerve. 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 cochlea fluid will trigger the hair cells to trigger chemicals generating an electrical signal which the auditory nerve sends to the brain in a form that the brain 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 is a unit that can be customized to the user needs 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 role of the receiver is to turn the digital signals into vibrations the ear can understand. Depending on the need and function, a patient can access different kinds of hearing aids.