Transmitting Sound Waves through Cranial Bones by Vibrating Transducers Using Bone Conduction.

  • Apurva Joshi, Mr. Shailesh Bendale


Bone conduction is known as to sound conducted due to vibrations along the bones to the cochlea housing the organs of hearing and balance. The vibration is carried through entire skeletal structure. Due to physical vibrations along the bones, bone conducted sound has more influence on nervous system than normal air conducted sound. Bone conduction is why one perceives own sound different when he listens to recorded voice. Because bone conducts sound of lower frequency better than air, people perceive their own voice to be fuller and lower than other do, while in recording of one’s voice frequency is higher than one expects. Despite of many uses bone conduction head gears industry is still evolving slowly. The electromechanical transducers converts’ electric signal to mechanical vibrations and sends sound to internal ears through cranial bones.  Bone conduction head gears bypasses eardrum and do actual work of eardrums. Most cases of hear loss are due to damage to eardrums. Since bone conduction does not uses eardrums, people with hearing difficulties may be able to hear clearly again with the help of bone conduction provided their cochlea is in normal condition. Other uses for bone conduction head gears can be for visually impaired people for navigation while also maintaining situational awareness.