As time and technology progresses and a lot of devices are undergoing a "digital makeover," hearing aids also now have digital models. Digital hearing aids work with a computer chip programmed by a professional so it's able to adjust the sound quality depending on a wearer's needs and reactions. Digital hearing aids are composed of a computer chip, microphone, receiver and battery.
Digital circuitry is utilized for this device, and a lot of digital hearing aids are available on the market. It is very useful and perhaps the most versatile of all types of hearing aids. It also makes it extremely expensive.
Other features of the digital hearing aid are the various modes or programs to fit specific situations. These can be adjusted for quiet situations, music listening, directionality and background noise reduction.
It has a flexible gain processing system, picking out which sounds should be amplified and by how much, avoiding further damage to hearing and making the quality of sound better. Digital feedback reduction eliminates or lessens feedback enough while the hearing aid is worn by the user so that it doesn't interfere with one's listening.
Unlike traditional hearing aids that aim only to amplify sound, digital hearing aids feature digital noise reduction that detects noise and reduces it to avoid more harm to one's hearing and state of mind. When compared to directional microphones, which offer some level of noise processing as well, the knock on directional microphones is that it only reduces noise that is either behind or at the sides of the user.
Digital hearing aids also have digital speech enhancement, scanning for various intensities of speech patterns of speakers and adjusting them automatically for listeners. This, however, is a relatively new technology, so the level of its efficacy has yet to be truly discovered.
These aids also have digital signal processing, taking analog sounds and converting them into digital form. Because of this, digital hearing aids can also produce sounds instead of merely processing it. This is used to test the threshold of sound the hearing could process, and increase the hearing aid’s accuracy.
Digital hearing aids are truly technological marvels. There will come a time that digital hearing aids will become the standard and not just a novelty and a higher-end option of hearing aids. One could only imagine what they will think of next.
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