Most hearing aids live next to your ear, and use microphones to pick up sounds around you, and a tiny amplifier to pump up the volume so people who are hard of hearing in one ear can discern what's going on around them. The SoundBite Hearing Aid from Sonitus Medical is a little different: it still uses a behind-the-ear microphone to pick up sound, but instead of piping that sound through your ear, it uses a tiny transmitter to send the sound to a bone conducting audio device that's worn next to your back molar.
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