Some hearing aids and the Neptune employ bone conduction, achieving an effect equivalent to hearing directly by means of the ears. A headset is ergonomically positioned on the temple and cheek and the electromechanical transducer, which converts electric signals into mechanical vibrations, sends sound to the internal ear through the cranial bones. Likewise, a microphone can be used to record spoken sounds via bone conduction.
Bone conduction transmission can be used with individuals with normal or impaired hearing. There are several products on the market that exploit the bone conduction transmission pathway for sound.
Example of Bone Conduction
Neptune is a waterproof MP3 player by FINIS that provides the highest quality sound in the water without the use of ear buds. Neptune uses bone conduction audio transmission to transmit crystal clear audio through the cheekbone directly into the inner ear.