Is the hearing aid an amplifier – is the hearing aid an amplifier?

Hearing aid is an amplifier–Is the hearing aid an amplifier?

Many people think that a hearing aid is actually an amplifier that only amplifies the sound, but the hearing aid is not just a simple amplifier. 首先,The hearing aid can amplify the sound signal to maximize the user’s perception of the sound. We all have this experience,Too small a sound is not easy to hear. 其次,The hearing aid can selectively amplify sounds of different frequencies according to the user’s hearing loss.(such as,Patients with high frequency hearing loss,High frequency multi-amplification;Patients with low frequency hearing loss,More amplified low frequency),Try to ensure that users can hear and try to hear. third,Most hearing aids focus on amplifying the language frequency,Focus on ensuring language communication. 第四,After adding some special circuits,Some hearing aids amplify weak sounds,You can also limit the large sound output as needed. Thanks to the above functions,Hearing aids benefit the vast majority of users. 然而,Hearing aid“万能“Can’t be perfect,It can’t solve all the problems of deaf patients.

such as,The upper frequency limit of normal hearing is20000Hz,And the frequency response range of the hearing aid can8000HzIt’s already very good,Over frequency8000HzThe sound rarely reacts. In this sense,Patients with deafness will not get better hearing than normal people, no matter how good they are. therefore,The idea that wearing a hearing aid no longer has hearing impairment is completely unrealistic.