Evaluation of tooth-conduction microphone for communication under noisy environment

• Torikai Yusuke

  Department of Intermedia Art and Science, Waseda University

• Kuze Dai

  Department of Intermedia Art and Science, Waseda University

• Kurosawa Junko

  Comprehensive Research Organization, Waseda University

• Oikawa Yasuhiro

  Department of Intermedia Art and Science, Waseda University

• Yamasaki Yoshio

  Comprehensive Research Organization, Waseda University

Abstract

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.

Journal

• Acoustical Science and Technology

  Acoustical Science and Technology 36 (6), 500-506, 2015

  ACOUSTICAL SOCIETY OF JAPAN

Keywords

• Voice acquisition
• Bone-conducted voice
• Tooth-conducted voice
• Communication-aid
• Piezoelectric device

Details

• CRID: 1390282680065344256
• NII Article ID: 130005106787
• NII Book ID: AA11501808
• DOI: 10.1250/ast.36.500
• ISSN: 13475177
• ISSN: 03694232
• ISSN: 13463969
• NDL BIB ID: 026833556
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026833556
• Web Site: https://www.jstage.jst.go.jp/article/ast/36/6/36_E1516/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed