What is bone conduction

A New Way Of Hearing

Most of the sound comes from the sound waves passing through the air to the tympanic membrane, and then the sound waves vibrate the tympanic membrane and transmit the sound to the inner ear. Another way is that the sound waves are transmitted directly to the inner ear through the bone vibration without passing through the tympanic membrane. This is also a new way for humans to hear their own voice. It is bone conduction.

 

Bone Conduction In Life

When we eat cookies, we can hear the cracking of the cookies because vibrations are transmitted to our inner ear through our teeth and bones. When we eat, drink or scratch our heads, we can hear the sound of bone conduction.

Difference between acoustic conduction and bone conduction

Bone conduction: refers to the surface of the host bone from the periphery of the implant bed and the oriented osteogenic precursor cells in the bone marrow extend to the surface of the implanted bone and its cavity by proliferation and extension, and the osteoblasts form new bone.

Sound wave transmission: The transmission channel is different. The external sound heard by the ear is that the vibration of the outside air transmits the information of the sound to the auditory nerve through the eardrum, and the processing of the brain forms the hearing we say. The voice we hear ourselves speaks is that the vibration of the vocal cord is transmitted directly from the inside to the auditory nerve by the skull, plus another kind of hearing formed by the processing of the brain.

That is to say, the former allows others to hear the sound through the way of air transmission; the latter spreads through the skull to let them hear the sound.

 

Why is there such a big difference between the two modes of transmission? In fact, this is because the sound transmitted through the air is affected by the environment, and its energy is greatly attenuated, causing a great change in the tone, and when the sound reaches the inner ear of others, To pass the outer ear, the eardrum, and the middle ear, this process also affects the energy and timbre effects of the sound. The sound transmitted through the skull passes directly through the bone between the throat and the ear to the inner ear, and the attenuation and change of the sound energy and tone are naturally relatively small. Therefore, the resulting hearing is different.