Want to make a bone conduction earphone, the smaller the better, the principle is known to all, that is, where to put the earphone? How come? Materials, those? Ok, supplement it!

If you don't sell it yourself, check the patent. There are thousands of patents on bone conduction, and the technical scheme and drawings are very good. . If not, you can sue the patent applicant for insufficient disclosure:)

The following is a patent abstract, a bone conduction earphone with auxiliary vibration ear studs, which can reduce the vibration loss and external noise transmitted to the skull at the same time. The invention provides a bone conduction earphone, which leads the vibration lost in the main vibration shell into the ear by forming a new earphone form including a main vibration shell contacting the temple and an auxiliary vibration earring directly inserted into the ear, thereby fully spreading sound through bone conduction and improving the hearing ability. In addition, the auxiliary vibration earrings arranged in the main vibration shell can effectively reduce the external noise entering the ear, and the hearing ability can be further improved with the reduction of external noise.