First of all, the hearing aid can amplify the sound signal to ensure that the user feels the sound to the greatest extent.We all have the experience that sounds that are too small are not easy to hear clearly; secondly, hearing aids can selectively amplify sounds of different frequencies according to the user’s hearing loss (for example, for patients with severe high-frequency hearing loss, the high-frequency is more Amplify; for patients with severe low-frequency hearing loss, amplify the low-frequency more), strive to ensure that the user can hear and hear as clearly as possible; third, most hearing aids have focused on amplifying the language frequency, focusing on ensuring language communication; Fourth, with the addition of some special circuits, some hearing aids can amplify weak and small sounds while also restricting the output of larger sounds as needed.With the above-mentioned functions, hearing aids can benefit most users.
However, hearing aids are not “omnipotent”, they cannot be perfect, nor can they solve all the problems of deaf patients.For example, the upper limit of the high frequency of normal hearing is 20000Hz, while the frequency response range of hearing aids can reach 8000Hz, which is very good, and it rarely responds to sounds with a frequency exceeding 8000 Hz.In this sense, deaf patients will not get better hearing than normal people no matter how good they wear hearing aids.Besides, most people are sensorineuralHearing lossBecause the auditory nerve hair cells are damaged to a certain extent, their speech recognition rate is basically less than 100%, and there will be a certain degree of “hearing, unclear hearing” problems.Therefore, it is totally unrealistic to think that wearing hearing aids will no longer have hearing impairment.
Hearing aids are machines after all, and no matter how good they are, they have limitations and cannot be compared with natural ears. In order to achieve a better effect, you need to learn other auxiliary skills.
Expert suggestion: It is recommended to learn lower lip language skills, lip language has two meanings, one is to speak, use lip language to make your pronunciation more standard (the deaf-friendly ones have inaccurate pronunciation problems), and the other is to read the words, that is, look at each other You can use your mouth to know what the other person is saying, and you can use your eyes instead of hearing to help you communicate! Generally speaking, deaf friends who learn lip language skills, because they can listen and see, the effect of wearing hearing aids is very good! Lip language can be taught by yourself , You can usually watch TV or practice in the mirror, but you need to be patient. Now there are lip language software on the market. If you have the conditions, you can buy lip language software to learn, more systematically, and learn faster!
