Up to now, some people with hearing impairments do not know that hearing aids are simple analog hearing aids that require professional fitting, tens or hundreds of dollars purchased at pharmacies or online.
Appearance, this analog hearing aid is the same as a real digital hearing aid, but the function is very different.
Simulating the hazards of hearing aids
Simulated hearing aid debugging does not require any hearing data, and generally only has one knob that adjusts the sound size.
Wearing this kind of hearing aid, while the small sound is amplified, the loud sound will be amplified to the same extent, so in a noisy environment, wearing a simulated hearing aid, or whispering can not be heard, or listening to loudly can not stand. thereforeCan cause discomfort to the patient or even damage the residual hearing.
The difference between digital hearing aids and analog hearing aids
In short, digital hearing aids use digital technology to segment the sound signal, wide dynamic range compression, multi-channel programming, and noise reduction processing, so that it has intelligent features, which can better meet different users within the adaptation range. Hearing needs. The biggest feature of digital hearing aids is that the signal-to-noise ratio is high, the sound is clearer, and the resolution is better.
Link：Simulating the hazards of hearing aids
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