A quality design of bone conduction voice in magnetic resonance imaging noise

Kojiro Takahashi, Kenji Muto, Kazuo Yagi

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The acoustical driving noise of a magnetic resonance imaging (MRI) device is loud. A bone conduction microphone is used to transmit the patient's voice because it works better than other microphones during an MRI examination. However, when the patient becomes unwell, the doctor cannot understand the transmitted voice of the patient because the voice is faint and the MRI acoustical noise is loud. The MRI acoustical noise generates a vibration in the patient body. The vibration propagates to the microphone and deteriorates the communication quality. Our goal is to explore the relation between the shielding area of the bone conduction microphone and the communication quality. We propose a theoretical formula for the characteristic of the vibration propagation and the ratio of the vibration acceleration to the sound pressure based on a distributed constant. The communication quality in the case of the shielding the bone conduction microphone was verified using the theoretical formula. The estimated communication quality was equal to the experimental communication quality with high accuracy. The results show that the communication quality could be improved by a shielding area, such as an earmuff, to a level where the doctor could recognize the patient's faint voice.

本文言語English
ホスト出版物のタイトルProceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
出版社German Acoustical Society (DEGA)
ページ2713-2720
ページ数8
出版ステータスPublished - 2016 8 21
イベント45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany
継続期間: 2016 8 212016 8 24

Other

Other45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
国/地域Germany
CityHamburg
Period16/8/2116/8/24

ASJC Scopus subject areas

  • 音響学および超音波学

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