Working Paper Article Version 1 This version is not peer-reviewed

Dentary Bone Conduction Device Equipped with a Self-Made Laser Pointer

Version 1 : Received: 4 July 2020 / Approved: 5 July 2020 / Online: 5 July 2020 (06:36:57 CEST)

How to cite: Perng, J.; Hsieh, T. Dentary Bone Conduction Device Equipped with a Self-Made Laser Pointer. Preprints 2020, 2020070047 Perng, J.; Hsieh, T. Dentary Bone Conduction Device Equipped with a Self-Made Laser Pointer. Preprints 2020, 2020070047

Abstract

Using the headphone jack of a mobile phone, the proposed device connects mobile music playback through a customized red laser pointer that is cascaded to batteries and the 3.5-mm stereo plug. The red laser pointer flashes according to the frequency of the music currently playing on the mobile phone. The self-made laser pointer which wavelength is 630–650 nm and maximum output is 5 mw and it will light up when the smart phone’s music starts playing at a music frequency matching the light frequency. The frequency signal of the light received by a solar panel is converted to an electrical analog signal, and the analog current signal is amplified through the energy conversion panel and then output to the direct current motor. The motor shaft does not rotate under a small current, but rather only slightly vibrates according to the magnitude of the currents’ analog frequency. Through gripping the motor shaft with teeth, users can transmit audio to the auditory ossicles (i.e., malleus, incus, and stapes) through the dentary bones. After receiving a music signal, the auditory ossicles enable people with congenital or acquired hearing loss to access external audio.

Subject Areas

dentary bone conduction; photoelectric conversion; auditory ossicles

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