Percentage of correct answers of relationship between SNR of voice quality and pressuring force of bone conduction microphone

Michi Inagaki, Kenji Muto

研究成果: Conference contribution

抄録

A magnetic resonance imaging (MRI) scanner operates at a noise level of 100 dB or more. When a patient uses a piezoelectric bone conduction microphone to communicate with the doctor, the MRI vibrations deteriorate the quality of the patient's speech. Our aim was to improve the quality of the patient's speech when communicating with a doctor from within the noisy MRI environment. Shielding of the bone conduction microphone improved the signal-to-noise ratio (SNR) to −7 dB; however, it was not sufficient to understand the patient's voice accurately. In this paper, the effective SNR required to understand the patient's voice accurately was clarified. First, we measured the relationship between the force applied on the microphone and the percentage of the patient's answers that were correctly understood. Next, we measured the relationship between the SNR, from three types of MRI noise and the percentage of correct answers that were obtained at the optimum applied force. The results showed that the SNR needs to be over 0 dB to achieve accurate communication with the patient when using the most effective force on the microphone.

本文言語English
ホスト出版物のタイトル25th International Congress on Sound and Vibration 2018, ICSV 2018
ホスト出版物のサブタイトルHiroshima Calling
出版社International Institute of Acoustics and Vibration, IIAV
ページ115-121
ページ数7
ISBN(電子版)9781510868458
出版ステータスPublished - 2018
イベント25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018 - Hiroshima, Japan
継続期間: 2018 7 82018 7 12

出版物シリーズ

名前25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling
1

Other

Other25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018
国/地域Japan
CityHiroshima
Period18/7/818/7/12

ASJC Scopus subject areas

  • 音響学および超音波学

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