Evaluation of tooth-conduction microphone for communication under noisy environment

Acoustical Science and Technology

Junko Kurosawa¹  Yasuhiro Oikawa²  Dai Kuze²  Yoshio Yamasaki¹  Yusuke Torikai² 

[1] Comprehensive Research Organization, Waseda University;Department of Intermedia Art and Science, Waseda University

关键词: Voice acquisition;    Bone-conducted voice;    Tooth-conducted voice;    Communication-aid;    Piezoelectric device;   

DOI  :  10.1250/ast.36.500

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(15)We investigated a new communication-aid system focused on bone-conduction through a tooth, for listening to and recording voices. In this paper, we developed a tooth-conduction microphone (TCM) and evaluate the articulation of tooth-conducted voice (TCV). Because the TCM has the shape of one's dental mold, it is wearable like a mouthpiece. Moreover, it can extract tooth vibration during phonation as TCV. To evaluate articulation of TCV, we adopted monosyllable articulation for subjective assessment and linear predictive coding cepstral distance for objective assessment. The results of articulation show that TCV is not sufficiently clear compared to air-conducted. However, it is confirmed that TCV is robust to environmental noise because the accuracy rate is not decreased when the TCV is recorded under high ambient noise.

【 授权许可】

Unknown