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After wearing the hearing aid, even if you haven’t turned it on, some people will feel that they have an echo, and they are as if they are talking in a wooden barrel.

This is because the ear mold (including the custom-made hearing aid housing) closes the external auditory canal, and the sound of the self-talk is transmitted through the middle ear and the skull, causing the vibration of the external auditory canal cartilage.

Under normal circumstances, if the hearing aid earplugs are open type, the sound energy is released and it is not easy to detect. But when the external auditory canal is closed by the earplugs, this part of the energy is left in the external auditory canal, and the echo is now produced.

Of course, we can also understand from another angle:

The sound of our own voice to the tape recorder or the mobile phone always feels “weird”, but others don’t think it.

Why is this? Because under normal circumstances, we listen to ourselves: there is a “gas guide” that comes out of the mouth and passes through the outer ear to the inner ear. There is also a “bone guide” that is transmitted directly to the inner ear through the vibration of the skull.

When listening to the recorder, we can only hear the “air conduction” and not the “bone guide”.

Under normal circumstances, “air conduction” and “bone conduction” are balanced, and we have become accustomed to it. But wearing a hearing aid, the “bone guide” suddenly strengthened, and it sounded like an echo.

　　Jinghao medical hearing aid reminder:Hearing aids need to be professionally “fitted”. It is very important to choose a professional hearing aid fitting center and hearing aid fittings! You can call the Jinghao medical for any hearing problems, or you can come to the center to experience the experience. . Hearing aid free consultation phone: +86-18566295705

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