On the function of hearing aids

How does the hearing aid, which is essentially a magnifying device, work?

First of all, the hearing aid can amplify the sound signal to maximize the user’s perception of the sound. We all have such experience that it is not easy to hear too small a voice;

Secondly, hearing aids can selectively amplify sounds of different frequencies according to the user’s hearing loss (for example, for patients with high-frequency hearing loss, high-frequency and multi amplification; for patients with low-frequency hearing loss, more amplification of low-frequency), so as to ensure that the user can hear and hear as much as possible;

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Thirdly, most hearing aids focus on amplifying language frequency and ensuring language communication;

Fourth, after adding some special circuits, some hearing aids can enlarge the weak sound and limit the larger sound output as required. Because of the above functions, hearing aids can benefit the vast majority of users.

However, hearing aids are not “omnipotent”, which can not be perfect, and can not solve all the problems of deaf patients. For example, the upper limit of high frequency of normal hearing is 20000hz, and the frequency response range of hearing aid can reach 8000Hz, which is very good, and there is little response to sound with frequency over 8000Hz. In this sense, no matter how good a hearing aid is, deaf people will not get better hearing than normal people. Therefore, it is totally unrealistic to think that hearing aids will no longer have < a href = "http: / / www.sqhearing. COM / tlkp / 906. HTML" target = "_blank" > hearing impairment < / a >.

Objectively speaking, hearing aids are effective, but their functions are limited. This kind of phenomenon is like wearing dentures (dentures). Without dentures, I’m afraid that a little hard food will not be able to deal with it. With dentures, you can’t chew hard bones.

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