Talking Tooth

by Barry Fox NewScientist.com, 27 Sep 2005 When background noise is horribly loud -- in a tank, on an airport runway or aircraft carrier -- ordinary microphones are useless. Even mics that clamp to the throat or skull are no good because the noise vibrates the sensor. So four inventors deep in the heart of US Defence territory, in Maryland and Virginia, have come up with a mic that is clamped to a back tooth. Read more