Evaluation of tooth-conduction microphone for communication under noisy environment

Yusuke Torikai; Dai Kuze; Junko Kurosawa; Yasuhiro Oikawa; Yoshio Yamasaki

doi:10.1250/ast.36.500

Evaluation of tooth-conduction microphone for communication under noisy environment

Yusuke Torikai, Dai Kuze, Junko Kurosawa, Yasuhiro Oikawa, Yoshio Yamasaki

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

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 airconducted. 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.

Original language	English
Pages (from-to)	500-506
Number of pages	7
Journal	Acoustical Science and Technology
Volume	36
Issue number	6
DOIs	https://doi.org/10.1250/ast.36.500
Publication status	Published - 2015

Keywords

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

ASJC Scopus subject areas

Acoustics and Ultrasonics

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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 airconducted. 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.",

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author = "Yusuke Torikai and Dai Kuze and Junko Kurosawa and Yasuhiro Oikawa and Yoshio Yamasaki",

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AU - Kuze, Dai

AU - Kurosawa, Junko

AU - Oikawa, Yasuhiro

AU - Yamasaki, Yoshio

PY - 2015

Y1 - 2015

N2 - 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 airconducted. 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.

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KW - Piezoelectric device

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Evaluation of tooth-conduction microphone for communication under noisy environment

Abstract

Keywords

ASJC Scopus subject areas

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