A Look At The Directional Microphone Functionality In Hearing Aids

For many years, analog hearing aids have become quite popular and easily available. Said hearing aids have a mic that collects sounds and convert these sounds to energy which is then transferred to an amplifier to increase the strength of the energy; a receiver that converts the electrical energy to acoustic sounds which are then delivered to the ear. An analog hearing aid works by amplifying sounds without making it too loud; a simple enough process when you get right down to it but this simple device does come with a number of advanced features. A popular feature among today’s eharing aids are directional microphones. Taking a closer look at this feature can help you decide whether or not it would be beneficial to choose hearing aids with this feature. If so, then how does a directional microphone in a hearing aid works?

One of the most challenging situations in listening when you have hearing impairments is to understand conversation especially in noisy places. And the most effective way to cut down the effects of surrounding noises is to use two microphones on each device: one on the front and one on the back. The use of these microphones is to relay information on the devices’ processor, allowing the device to analyze the sounds. So when processors on the hearing aids analyze a high level of noise, the sensitivity of the back microphone is lowered which means that the background noise levels are also reduced. In cheaper hearing aids, you can minimize the sensitivity of the microphone by either pushing a button on the device or using a remote control so you can reduce background noise levels.

There are more expensive hearing aids however that come with more advanced and more powerful processors that automatically cuts down the sensitivity of the rear mic so background noises are also minimized. The processors would also increase the sensitivity of the back microphone, getting it back to a normal range as soon as the environment gets quiet so you would not miss hearing any soft sounds coming from your back. It is important to understand however, that directional microphones are designed to REDUCE noise, and not eliminate them so you would still be able to hear background noises, albeit significantly reduced in volume which would help you understand conversations even in crowded, noisy places. Before buying hearing aids with this feature, do study all the information you have gathered very carefully.

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