How to deal with the feedback problem of behind-the-ear hearing AIDS?

Hearing aid feedback (howling) is a common problem in the use of hearing AIDS. Why is there feedback? For example, if you connect the water pipe to the faucet, if the connection between the water pipe and the faucet is not tight enough, there will be water leakage, and so will the hearing aid. If the hearing aid is not sealed enough with our ears, the amplified sound will leak out of our ears, which is the formation of feedback.

Generally speaking, the feedback probability of behind-the-ear hearing AIDS is less than that of in-ear hearing AIDS, because behind the ear, the microphone is behind, and the sound is transmitted to the ear through a small tube. Even if there is sound leaking out, it is far from our microphone. In-ear hearing AIDS are different, because the microphone is in the ear, so the feedback probability is greater than that of behind-the-ear hearing AIDS.

Nowadays, with the development of science and technology and the maturity of hearing aid technology, many feedback suppression technologies have been applied, and hearing AIDS are getting better and better in eliminating feedback. Usually we can solve the feedback problem in two ways.

First of all, the fitter debugs the hearing aid by computer, and adjusts the loudness and other parameters of the hearing aid to make the hearing aid reach the ideal state. General feedback problems can be solved by debugging.

Second: If the feedback problem can't be solved by debugging, we can consider customizing a new ear mold for the patient, choosing a material and shape more suitable for the patient, making the ear mold more airtight and avoiding the amplified sound from leaking out.

In a word, the feedback problem of behind-the-ear hearing AIDS can be solved, and we can find a fitter to deal with it accordingly.

If the sound leakage is caused by the aging and rupture of the ear mold sound guide tube, the sound guide tube can be replaced, and the joint between the sound guide tube and the eardrum will also cause sound leakage and feedback howling. If the howling continues, you can remove the ear hook of the hearing aid and block the receiver with your hand. If the whistle stop card indicates that there is a gap in the ear hook, the ear hook can be replaced. If there is still howling after the above treatment, it proves that there is something wrong with the hearing aid and it needs maintenance. In addition, inappropriate air holes in in-ear machines are also easy to cause howling. Making a muffler in the air hole can suppress feedback and ensure that users listen to the sound more naturally.