What is the principle of hearing aid

Hearing aid is essentially an electroacoustic amplifier. The acoustic signal is converted into electrical signal by microphone (microphone), amplified by amplifier and then transmitted to human ear by receiver.

Fitting hearing aids refers to the selection of hearing aids suitable for strength under the guidance of professional and technical personnel. Like glasses, hearing aids are also functional aids that need to be tested.

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First of all, because people’s hearing disorders vary widely. Take the old deafness as an example. Different types of deafness, different levels of hearing impairment, whether there is tinnitus, how to distinguish speech, etc. lead to different hearing impairments. Different hearing impairments need different hearing aids. In fact, even people with the same nature and degree of hearing may have different feelings and requirements for hearing aids.

Secondly, there are many brands and models of hearing aids. For users, which one is more suitable for their actual needs is a very professional problem that users can’t solve by themselves, and can only be decided by professionals. For example, how to choose hearing aids for patients with severe hearing loss and strong voice allergy? If we emphasize amplification, they will find the sound hard to bear; if we emphasize strong voice compression, the signal sound is not real and clear enough. How to solve this kind of contradiction is one of the important work contents of hearing aid matching. Only when the hearing condition of the user is fully consistent with the performance of the selected hearing aid can the best hearing aid effect be achieved.

What is the result of assuming that the hearing aid does not pass the professional test of the professional? It is harmful and useless to wear the hearing aid improperly. Because each person’s hearing situation is different, the requirements for hearing compensation are also different. If an inappropriate hearing aid is selected, it may not be able to provide enough hearing compensation for the hearing loss. What’s more, if the sound produced by the hearing aid is too loud, it may damage the residual hearing, further aggravate the degree of hearing loss, and even damage the auditory nerve. In view of this, hearing aids must be checked and matched by professionals before they can be safely worn.

Jinghao hearing aid reminder: hearing aid wearing requires professional “matching”, so it is very important to choose a professional hearing aid matching center and a hearing aid tester! If you have any hearing problems, you can call Jinghao for consultation, or come to the matching center for experience. Hearing aid free consultation Tel.: + 86-18566295705