How do children’s hearing aids often whistle?
Parents often ask questions: The child always wears a hearing aid, and the parents can hear a lot of snoring. Is the hearing aid murmur? Or: Every time you wear a hearing aid to your child, you will be snoring. After you wear it, you will not have it, but the child can hear it when he sleeps on the hearing aid or wearing a hat. What is the reason?
In fact, these problems are what we often say “howling”, also called “sound feedback”, which is a normal situation in the work of hearing aids, indicating that the hearing aid is in normal working condition. As long as it is worn correctly, “howling” can be eliminated.
There are several common causes of whistling in children’s hearing aids:
1The ear mold is worn incorrectly.
Children who are wearing hearing aids, because parents are not familiar with the wearing method of the ear molds, did not wear the ear molds in place during the initial wearing, resulting in a gap between the ear mold and the ear canal, thus producing acoustic feedback. Parents should learn the correct way to wear the earmuffs as soon as possible to avoid whistling.
2Changes in the ear canal
Children are in the growth stage, and their ear canal is constantly changing. Since the ear mold is made according to the child’s ear canal, because of the development of the ear canal, a pair of ear molds can not completely fit the ear canal after using for a period of time, which will cause howling. At this time, the child should change the ear mold regularly, according to different development speeds, generally6-12Change it once a month.
3The ear canal is blocked
After the hearing aid is worn, the sputum in the ear canal is not easy to discharge the ear canal in time, which is easy to cause sputum accumulation.Child hearing aidThe sound that enters the ear canal is blocked by the sputum and is reflected, causing a howling. It is recommended that the hearing aid wearer regularly go to the hearing center for ear canal examination, and if it is found that the sputum is blocked and cleaned up in time.
4, ear mold making is not suitable
At present, most of the ear molds are made by manually taking the ear prints. Since the children’s compatibility is worse than that of the adults, if the molds are smashed or scratched during the process of taking the molds, the quality of the ear prints may be poor. The ear mold ear made is not deep enough or the seal is not tight, so that whistling may occur after wearing. At this point, it is necessary to re-take the ear impression mold and re-create the ear mold.
5, damaged ear mold or damaged ear hook
During the use of ear molds and hearing aids, due to the corrosion of sweat and oil behind the ear, the ear mold sound tube and the ear mold material will be aging and hardened, and the ear hook interface is also prone to loosening and aging. Once the gap is generated, the sound will be from Leaks in the gap, causing a harsh whistling sound. It is recommended to carefully observe the hearing aid and the ear mold after the howling, and find the phenomenon of cracking or sound tube hardening, and timely change the ear mold or ear hook to the hearing center.
6, hearing element internal component failure
Children wearing hearing aids are inevitably bumpy or beaten. The hearing aids are electronic products. Although they have undergone strict factory inspections, if they are often bumped or beaten during wearing, it is easy to cause looseness or malfunction of the internal components of the hearing aids, resulting in howling. This kind of situation is called the internal whistle of the hearing aid. Once it is judged to be internal whistling, the hearing aid needs to be returned to the factory for repair. The probability of the internal whistling of the hearing aid is very small. Try to avoid bumping during normal use, and put a special protective box for the hearing aid when going out.
All of the above are common causes and solutions for hearing aids. Most of the howling can be solved by re-wearing the hearing aid or re-making the ear mold.
If the hearing aid is worn for a period of time, the parents find that the hearing aid starts to scream. It is very likely that the ear canal is not suitable for the child’s ear canal. Please contact the hearing specialist to deal with it.
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