What is the difference between inaudible and inaudible?

As we grow older, our hearing organs begin to age and degenerate. The older you get, the more likely your hearing is to deteriorate. This is also called "presbycusis", and in the early stages, high-frequency decline is the main cause. The central nervous system of the elderly has degenerated, and the brain's ability to process information has weakened. Compared with young people with the same degree of hearing loss, the elderly have worse recognition ability, and the phenomenon of unclear hearing and incomprehension is more common.

What is the difference between inaudible and inaudible?

In fact, being unable to hear and being unable to hear clearly should be two different concepts. If the hearing loss has reached the point of being unable to hear, such hearing loss basically means that there is no hearing. But it's different if you can't hear clearly. As long as there is hearing loss and the hearing is not within 25dB of normal hearing, it will affect our communication to some extent during communication. Because the energy to receive sound decreases, our clarity will decrease, leading to the problem of hearing but not being able to hear clearly. So strictly speaking, being unable to hear and being unable to hear clearly are two different concepts. As soon as hearing loss is discovered, hearing intervention is recommended as soon as possible.

Human hearing includes two stages: hearing (perception) and hearing (understanding). Hearing is a physiological function of the auditory system, while hearing clearly is a high-level function, including auditory recognition, auditory memory, auditory understanding, etc. As long as there is a sound signal transmitted to the hearing center, we "hear"; but to hear clearly, we must also have auditory discrimination ability. Therefore, if you can hear clearly, you must have heard it, but if you hear it, you may not hear it clearly.

The inner ear has the ability to simply distinguish sound signals. After the inner ear is damaged, the auditory discrimination ability will be reduced. However, because people's auditory discrimination ability has enough room, 70% recognition of a sentence is enough to ensure that we understand it, without demanding 100%. Therefore, less serious inner ear damage will not cause the patient to completely lose his auditory discrimination ability.

The auditory center has a more complex and powerful ability to distinguish sound signals. If the auditory center is damaged, the auditory recognition ability will be significantly reduced. When people enter a noisy environment, because the speech signal itself becomes unclear, it is more difficult for people with normal hearing to listen, and it is even more difficult for patients with reduced auditory function to hear clearly. A similar situation will occur if the signal sound is too low. For example, if the TV sound is too low, we cannot hear clearly. Unfortunately, most patients with sensorineural deafness have damage to the inner ear and auditory center, but the degree is different. Moreover, the more severe the hearing loss, the worse the discrimination ability. Only the hearing system canExceptions include menstrual lesions. Therefore, most patients with sensorineural deafness complain that they can hear but not hear clearly.

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