Bone conduction voice transmission apparatus and system

A voice sound transmission unit having an earpiece that is adapted for insertion into the external ear canal, the earpiece having both a bone conduction sensor and an air conduction sensor. The bone conduction sensor is adapted to contact a portion of the external ear canal to convert bone vibrations from voice sound information into electrical signals. The air conduction sensor resides within the ear canal and converts air vibrations of voice sound information into electrical signals. In its preferred form, a speech processor samples the output of the bone conduction sensor and air conduction sensor to filter noise and select pure voice sound signals for transmission. The transmission of the voice sound signal can be through a wireless link and can also be equipped with a speaker and receiver to allow two-way communication.