Bone conduction is just a secondary pathway for sound transmission in humans and most other mammals. Bone conduction works basically in the following way: Upon hitting the skull and interacting with the soft tissue in the head, a microwave signal in the range of about 2.4 MHz to 10 GHz https://vk243219.blogripley.com/21922668/Факт-О-k2tor-at-что-никто-не-говорит