[NotionSunday] put together a hearing amplifier project that probably doesn’t hit many of those design criteria. However, thanks to a 3D printed case, it looks pretty good. The device uses a ...

And some of the less expensive options are really just “cheap amplifiers," lacking the personalized level settings and noise ...

They were forced to consider the possible existence of this "cochlear amplifier" when improved measures from living (as opposed to dead) ears revealed that the mechanical frequency selectivity in the ...