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Wearing a hearing aid, the wind is very noisy, can you eliminate it?

Wearing a hearing aid, the wind is very noisy, can you eliminate it? 
The hearing of the elderly is declining, and the hearing aids should be worn in time, otherwise the hearing will be worse or worse and lead to deafness. Because of the aging of the body, the shrinking of the cochlear hair cells, the deterioration of the hearing center function, etc., the hearing is declining and even deafness, so many elderly people always complain that they are “audible but inaudible”. However, wearing a hearing aid can just make up for this shortcoming, making the sound heard clear and loud, while slowing down the aging process of the hearing system. Therefore, the elderly and their children who are reminded of hearing loss should wear hearing aids in time to avoid hearing loss.

Wearing a hearing aid, the wind is very noisy, can you eliminate it?
Noise is one of the most common problems in wearing and wearing. Some patients experience significant noise when wearing a hearing aid. In the process of amplifying the external environment noise, it does not take any intelligent measures to amplify the external sound through the same amplification principle, so the wearer often walks on the road with more people and more cars, and the hearing aid sound is very noisy and loud. Too much, feel uncomfortable, and the effect on communication with people is not very good!

How to solve

1, microphone protection cover
We often see the host interview on TV, carefully observe the microphone used by the host, and find that it is covered with a microphone cover, the role is to protect the microphone from being blown by the wind, thus reducing the interference of wind noise. Similarly, some behind-the-ear hearing aid microphones are also equipped with a "wind shield" to reduce wind noise.
2, CIC or IIC
Users of the ear canal (ITC) and ear-hook (ITE) hearing aids most often complain about wind noise problems because the two types of hearing aid microphones are exposed and easily blown by the wind. The deep ear canal (CIC) or complete ear canal (IIC) hearing aids are very deep into the ear canal, and the wind noise is blocked by the tragus, so that the wind cannot directly blow into the hearing aid microphone. Therefore, these two types of hearing aid users complain about wind noise. The chances will be much less.
3, directional microphone
When the dual microphone is working, the wind will blow to both microphones at the same time, and the wind noise will be larger. Therefore, in a noisy environment, manually switch to directionality. If the wind blows to the hearing aid, the user feels that the wind noise will be larger. In this case, consider manually switching to omnidirectional, single microphone working procedures, such as quiet programs. Thereby reducing wind noise.
4, wind noise blocking / management function
Some advanced hearing aids have wind noise suppression, called wind noise management or wind noise blocking. Hearing aids with this function can automatically detect wind noise and automatically reduce the low frequency of the hearing aid according to the wind speed, thus solving this problem.

Wind noise detection
Hearing aids detect wind noise in two ways, one is a frequency detector and the other is a dual microphone detector.
The frequency detector detects unstable airflow due to wind. The hearing aid chip is equipped with multiple frequency detectors. Low frequency detectors are very sensitive to slow winds (weak winds). The unstable airflow caused by the low speed wind has a longer wavelength. Fast winds result in shorter wavelengths of unstable airflow and smaller spatial dimensions, and therefore higher frequencies.
For hearing aids with dual microphones, the hearing aid can recognize the wind noise by comparing the signals of the two microphones. If the signals of the two microphones are basically the same, then it is not wind noise; if the two microphone signals are completely inconsistent, then Wind noise. The dual-millimeter detector is more sensitive than the frequency detector.

Wind noise treatment
According to research, the wind noise energy generated by the hearing aid is mainly concentrated at frequencies below 1500 Hz. Therefore, when the hearing aid detects wind noise, it will automatically reduce the low frequency gain of the hearing aid according to the wind speed, thereby improving the comfort of the wind noise environment. The faster the wind speed, the more the low frequency is lowered. In addition, the hearing aid automatically switches to omnidirectionality to further reduce wind noise.

5, hearing aid debugging
For hearing aids with wind noise blocking, we can adjust the intensity of the wind noise blocking function in the software.
However, what should I do with hearing aids that do not have wind noise management? Here are a few suggestions for everyone:
Method 1: Reduce the low frequency gain. Appropriately reduce the low frequency gain of 250Hz and 500HZ. If you still feel large, you can appropriately reduce the overall low frequency gain below 1500HZ. This method of debugging may affect speech intelligibility and find a balance between wind noise comfort and speech intelligibility.
Method 2: Add an outdoor program. If the user complains that the sharpness is affected after the previous method is debugged, consider setting up an outdoor program to reduce the low frequency gain below 1500 Hz in this program.
Method 3: Use volume control. Outdoors, the user feels that the wind noise is relatively large, reducing the volume, returning to the environment of communicating with people, and then adjusting the volume.

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