Hearing aid noise from where, Why is there noise when wearing a hearing aid?
Some users wear hearing if you feel the noise, you will wonder if there is a problem with the hearing aid itself. For this problem, we must first understand the source of the noise. From the technical analysis of hearing aids, hearing aid noise has:
1.Internal noise floor from the hearing aid’s own machine
2.The amplification of the external environment noise of the hearing aid under working conditions
The effect of hearing aid technical content on noise:
1. Simulating the noise emitted by the hearing aid itself<30Decibel or so.
2. The noise of the all-digital hearing aid itself is<15Decibel or so.
Due to the working principle of the simulated hearing aid, it does not take any intelligent measures in the process of amplifying the external environment noise, and the external sound is amplified by the same amplification principle, so the wearer often walks on the road with many people and more vehicles. I feel that the sound of the hearing aid is very noisy, the sound is too loud, I feel uncomfortable, and the effect on communication with people is not very good!
Because the working principle of the all-digital hearing aid is different from the nature of the simulated machine, especially when the complex external environment invades, the processing ability of the internal sound of the machine is revealed. It is effectively compressed (simulating the cochlear function of the human ear). To alleviate the noise and interfere with the thinking of the human brain. Effective and targeted compression processing of each frequency band makes us feel more natural when listening, and does not feel uncomfortable. The sound characteristics of all digital hearing aids are summarized: loud and uncomfortable, whispered!
Conclusion 1: The noise of the all-digital hearing aid is better than that of the analog hearing aid.
Conclusion 2: All digital hearing aids have better processing ability for external ambient sound than analog hearing aids. Therefore, it can more effectively reduce the interference of external noise on the brain.
Types of noise: There are many kinds of noise, such as the sound of cars on the road, the noise in the crowd, the harsh sound of other objects, the unbearable strong sound, the artificial noise emitted by people in daily life, the machine in the workplace. Sound and so on.
Why can we normal people easily adapt to the existence of this noise? The main reason is that we have a healthy cochlea. The function of the cochlea is to deal with the interference of external noise on the brain, to eliminate all the sounds that cause brain fatigue, and to filter. But for a deaf friend, especially neurological deafness, due to damage and lesions of the cochlea, its compression function has been greatly reduced, and the compression function of the hearing aid is needed to compensate! Therefore, the full digital hearing aid with compression function is better than the analog hearing aid.
The effect of different degrees of deafness on noise sensitivity: this is a very scientific problem. Through continuous experience summarization, we have come to the conclusion that the more deaf people, the worse their sensitivity to noise and their ability to perceive! That is to say, the more people with deafness, the more he feels the noise, the lighter the brain fatigue caused to him. Hearing loss of >65 decibels in the elderly, when they wear simulated hearing aids, 90% of people do not feel the negative impact of external noise on the brain, there is no hearing aid wearing uncomfortable situation. When the hearing loss is less than 60 decibels, more than 60% of the elderly will experience different degrees of environmental noise impact on the brain, which will affect his enthusiasm for listening to the sound and the attachment to the hearing aid! In addition, from a professional point of view, those older people with deafness who have less discomfort thresholds can perceive the intrusion of noise!
Many patients have been in a relatively quiet environment for a long time. When the hearing aid is first brought on, the speech sound is amplified, and the noise is also amplified. The patient is often difficult to adapt and needs a certain adaptation period so that it does not feel too noisy.
When the fitter fits and debugs the hearing aid for the patient, it is necessary to fully understand the patient’s sensitivity to noise and the performance of the hearing aid, and set the optimal hearing aid state for the patient in time to enable the patient to withstand the noise in the environment and help the patient. Smoothly through the adaptation period, not troubled by noise.
Therefore, the final result we have is that there is a direct relationship between the intrusion of noise and the choice of hearing aid, the degree of deafness of deaf patients, the hearing threshold of paralyzed patients, the adaptation of patients, and the adjustment of the fittings.
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