Adults that struggle to hear quiet noises or decipher sounds in a loud room, often find relief by using a hearing aid, as they amplify sound and provide a person with normal hearing levels. Many are small in size, and advancements in technology now allow manufacturers to make hearing aids virtually unnoticeable. What is even more impressive is how they work, as they utilize a variety of electronic components which allow a person to live life with a hearing impairment as normally as possible.
Microphone and Processor
As sound enters the ear canal, a hearing aid uses a microphone to capture the sound and transmit it to the onboard microprocessor. The chip turns the audio into a digital frequency that it monitors to determine the volume of the sound and then either amplifies it or blocks it out in the case of background noise. It is a simple process, but impressive given the small size of a hearing aid and the speed at which it can process information.
Once the processing chip determines what parts of the sound it receives need to be altered, it then sends it through an amplifier that transposes the digital sound frequency into analog audio. As the audio is released into the ear canal, it causes a vibration that reaches the ear drum and allows the person to hear it without interference. While a hearing aid uses technology to increase sound frequencies, the science behind how the sound is delivered is exactly how a person without a hearing aid device can hear.
A hearing aid will not work without electricity, as the microphone, processing chip, and amplifier all require energy to function. The small size of hearing aids requires the use of tiny batteries that are similar to those that are used in a watch, as they need minimal space. Most hearing aid batteries last for weeks at a time before needing replacement.
Anyone tired of dealing with hearing issues should consider using a hearing aid to help. The small size allows anyone to improve their hearing without the use of bulky models that were common when hearing aid technology was first released. Break free of hearing issues by talking to a physician about a quality hearing aid today.