Over-the-counter hearing aids have three important components: microphone, amplifier and speaker. Self-fitting hearing aids are equipped with signal channels. Generally, the more channels a hearing aid has, the wider the range it can adjust and the more expensive it is. Bluetooth hearing aids sometimes howl because an environment that can produce echoes is formed near the microphone.
Hearing loss can be classified into mild, moderate, moderately severe, and severe. Hearing loss of different frequencies will manifest differently in different environments. Patients with moderately severe hearing loss will have difficulty communicating in noisy environments.
Reliable communication systems are essential to ensure that every participant can clearly hear the tour guide, regardless of their location in the group or the ambient noise level.
When using self-fitted hearing aids in winter, you will encounter a series of usage problems caused by low outside temperature, dry weather, etc. Therefore, it is very important to know how to use and maintain over-the-counter hearing aids in winter.
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