Microphone

Scientists from the University of Illinois at Urbana-Champaign have created a new sound that we can't hear, but that is picked up by mics of all kinds. It could have some valuable applications, although there's also the potential for misuse.​

A new system allows a room to be computer-mapped using four randomly-placed microphones.

The SoundBite hearing system from Sonitus Medical transmits sound to the inner ear via the teeth using bone conduction.