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A common explanation often found in popular media is that because we normally hear our own voice while talking, we receive both sound transferred to our ears externally by air conduction and sound transferred internally through our bones.

"A lot of sound information in the real world is from vibration, going straight to the cochlea, or inner ear, which processes sound, as opposed to air conduction through our ears," she says.

While conventional hearing aids use air conduction to increase the volume of sound travelling through the air, SoundBite uses a different approach - bone conduction.