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. 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. 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. 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. Explosions and crashes have the ability to cause permanent hearing loss.
It is mandatory for people working in industries to be provided with protective gear that shields their ears from noise related damage. 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. 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. It all begins with the sound waves being converted into electrical signals which can be 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 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 microphones receive sounds from the outside word and translate them into signals of a digital kind which will be then processed by a microchip. 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. There are different types of hearing aids that suit the user depending on the needs and serve specific roles.