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Digital Hearing Aids

Many modern hearing aids are digital rather than analog. Digital hearing aids convert sound into numbers using mathematical formulas. There is no inherent sound quality increase in this process - a digital device can sound either worse or better than analog one depending on the quality of both devices.

However, digital hearing aids are much more flexible than their analog counterparts – due to the small size of the electronics involved many types of digital signal processing (called DSP) can be fit into modern hearing aids.

Certain types of signal processing allow digital hearing aids to filter out noise that may otherwise interfere with audibility, as well as reduce feedback and adjust to changing situations on the fly.

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