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Most of them are selected in the store  Hearing aid  Of patients or their families will ask the same question: what kind of hearing aid is good?Some people think that it is better to match with famous brands; some think that it is better to match with expensive; some people think that it is better to match with simpler; some people think that it is better to match with high-tech content… In short, everyone has his own You can also tell your own reasons based on the selection criteria.However, fitting hearing aids is a serious topic. If the choice of hearing aids is not appropriate, it will not only not help patients improve their hearing, but will also cause more serious consequences.Therefore, what kind of hearing aid is good, we must believe in scientific standards.

XNUMX. Recommendations for the basic selection of hearing aids for the elderly

1.声增益大于或相当于听力丧失值的1∕2－2∕3的助听器比较适合。

For example, a patient with a hearing loss of 80 decibels should have a voice gain of 40-50 decibels. Hearing aid .

2. The wider the audio frequency range, the better the hearing aid.The audio range that can be heard by normal human ears is 20-20000 Hz.

The low frequency part can provide more energy and improve the sound output of the hearing aid.The high frequency part determines the clarity of the language, making it easy to understand and hear clearly.The audio frequency of the hearing aid should be 300-4000Hz.

3. The larger the signal-to-noise ratio, the better.

The larger the signal-to-noise ratio, the smaller the noise generated by the hearing aid itself, and the better the quality of the amplified information.

4. The smaller the harmonic distortion, the better.

Harmonic distortion is less than 5%. Hearing aids less than 10% are optional. If the distortion is greater than 10%, the amplified sound of the hearing aid will be distorted, affecting the hearing effect.

XNUMX. How to use the elderly correctly Hearing aid ?

The auditory nerve and the auditory organs must be maintained. This is a place that people who wear hearing aids easily overlook. For those who use hearing aids, it is particularly important to remove the hearing aids and nourish their auditory nerves during rest, so that the ear nerves have a sufficient maintenance time. important.