1. A Novel Dentary Bone Conduction Device Equipped with Laser Communication in DSP
- Author
-
Cheng-Yan Guo, Tung-Li Hsieh, and Jau-Woei Perng
- Subjects
Digital signal processor ,Computer science ,TP1-1185 ,Biochemistry ,Signal ,Article ,Analytical Chemistry ,03 medical and health sciences ,0302 clinical medicine ,Bone conduction ,Hearing Aids ,DSP digital filter ,Humans ,Electrical and Electronic Engineering ,Sound quality ,030223 otorhinolaryngology ,Instrumentation ,Digital signal processing ,business.industry ,Communication ,Lasers ,Chemical technology ,Transmitter ,Signal Processing, Computer-Assisted ,Atomic and Molecular Physics, and Optics ,DSP-based ,Transducer ,CMU ARCTIC databases ,business ,Digital filter ,Bone Conduction ,030217 neurology & neurosurgery ,Computer hardware - Abstract
In this study, we designed a dentary bone conduction system that transmits and receives audio by laser. The main objective of this research was to propose a complete hardware design method, including a laser audio transmitter and receiver and digital signal processor (DSP) based digital signal processing system. We also present a digital filter algorithm that can run on a DSP in real time. This experiment used the CMU ARCTIC databases’ human-voice reading audio as the standard audio. We used a piezoelectric sensor to measure the vibration signal of the bone conduction transducer (BCT) and separately calculated the signal-to-noise ratio (SNR) of the digitally filtered audio output and the unfiltered audio output using DSP. The SNR of the former was twice that of the latter, and the BCT output quality significantly improved. From the results, we can conclude that the dentary bone conduction system integrated with a DSP digital filter enhances sound quality.
- Published
- 2021