How does the hearing aid work?

All hearing aids collect sound through a microphone. The sound processing is amplified and sent to the receiver (amplifier). The sound is then not only output directly to the ear canal of the user, but also to the ear canal through a hose that connects the ear mold. In an analog hearing aid, the original sound signal is processed into an electrical signal. In digital hearing aids, acoustic signals are processed into digital signals (0Or1), and then converted into an analog signal to the user

Analog sound processing

Analog sound processing basically means that the sound vibrates in the air, and this vibration is converted into a certain complex current through the microphone. The process of simulating sound is like copying a file: only a certain degree of repeated copying can be performed, because excessive copying can result in a large difference between the result and the original information.

Digital sound processing

Digital sound processing means that sound is recorded mathematically. The frequency and amplitude of the sound are measured in a very short time. The sound is encoded into a series of numbers, and the one-bit, one-bit sound processing is very accurate. A change in the details of a part does not affect the entire image. Digital signal recording is much more accurate than analog signals, so it can be reproduced infinitely without any loss of information. Just like a scanned image on a floppy disk, each copy is exactly the same as the original

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