Application of Photoelectric Conversion to Dentary Bone Conduction Device Using Analog Signals

It is attempt that uses dental bones to receive audio signals are rare in the past. Therefore, the main contribution of this article is to understand and analyze the audio signal through the teeth. Our homemade laser pointer has a wavelength of 630-650 nm and a maximum output of 5 milliwatts. It will light up when the smartphone’s music starts playing at a music frequency that matches the light frequency. The frequency signal of the light received by the solar panel is converted into an electrical analog signal, and then output to the DC motor. The motor shaft will not rotate under a small current, but will only slightly vibrate according to the analog frequency of the current. By biting the vibration axis with teeth, a person can transmit audio to the ossicles (ie malleus, incus and bone) through the dental bones. This device can enable people with congenital or acquired hearing impairment to access external audio.