It can also be explained from another perspective: we are always weird about our own voice coming from the tape recorder, but others don’t think it.This is because under normal circumstances, when we listen to ourselves, there are both air conduction sounds and bone conduction sounds.When listening to the recording, only the air conduction sound can be heard, but the bone conduction sound component is not heard.We are used to the sound of air and bone conduction balance.But put on Hearing aid , The bone conduction component suddenly strengthened, and it sounded echo.
This situation is more obvious in custom machines. Generally, we solve this problem by making vents on the custom machine, but sometimes for people with serious ear plugging, when choosing hearing aids, we must pay enough attention to the appearance.
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Link： Why do I feel that I have an echo when I wear a hearing aid?
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