Analogue Hearing Aid
A traditional simply makes the sound wave larger to amplify sounds.
The conventional analog hearing aids are designed with a specific frequency response based on the listener's audiogram.
http://www.jhhearing.com/products/analogue-hearing-aid.html
The conventional analog hearing aids are designed with a specific frequency response based on the listener's audiogram.
http://www.jhhearing.com/products/analogue-hearing-aid.html
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