The Air and Bone conduction system


SOUNDSORY® uses two different types of sound processing, both air and bone conduction, to stimulate the brain. These two systems emphasize different ways of sensory processing and complement each other.

Feel the vibration in your body

Sound is a vibration! When it travels through the air, we use the term “air conduction”. Sound travels even better through the bones of the body: this is called “bone conduction.” Cover your ears and speak normally. You hear your voice perfectly clear because it travels mainly through the bones of the skull. Speak louder and you can feel your whole body vibrate. SOUNDSORY® transmits music through headphones equipped with both air and bone conduction. The music therefore reaches the auditory and vestibular canals through the headphones placed on each ear and through a vibration at the top of the skull.


Air conduction

The sound, which comes from the air canal, arrives at the tympanic membrane before reaching the inner ear and being transmitted to the brain.

Bone conduction

The sound is directly transmitted to the inner ear without passing through the tympanum. Transmission by bone is naturally 10 times faster than the air canal.


This dual transmission of the sound in two times will therefore educate the brain to correctly analyze the sensory sound message.

Bone conduction also better transmits low frequencies, which directly go to the vestibule through bone vibration. The first role of the vestibular system is to cope with gravity and contribute to the sense of balance and spatial orientation for the purpose of coordinating movement with balance. The vestibular system is in charge of detecting changes of movements at the level of the body in order to enable constant postural readjustments. Bone conduction favors its mission.