Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | 25th International Congress on Sound and Vibration 2018, ICSV 2018 |
| Subtitle of host publication | Hiroshima Calling |
| Publisher | International Institute of Acoustics and Vibration, IIAV |
| Pages | 115-121 |
| Number of pages | 7 |
| Volume | 1 |
| ISBN (Electronic) | 9781510868458 |
| Publication status | Published - 2018 Jan 1 |
| Event | 25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018 - Hiroshima, Japan Duration: 2018 Jul 8 → 2018 Jul 12 |
Other
| Other | 25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018 |
|---|---|
| Country | Japan |
| City | Hiroshima |
| Period | 18/7/8 → 18/7/12 |
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Keywords
- Bone conduction microphone
- Magnetic resonance imaging (MRI)
- Percentage of correct answers
ASJC Scopus subject areas
- Acoustics and Ultrasonics
Cite this
Percentage of correct answers of relationship between SNR of voice quality and pressuring force of bone conduction microphone. / Inagaki, Michi; Muto, Kenji.
25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. Vol. 1 International Institute of Acoustics and Vibration, IIAV, 2018. p. 115-121.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Percentage of correct answers of relationship between SNR of voice quality and pressuring force of bone conduction microphone
AU - Inagaki, Michi
AU - Muto, Kenji
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - Bone conduction microphone
KW - Magnetic resonance imaging (MRI)
KW - Percentage of correct answers
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M3 - Conference contribution
VL - 1
SP - 115
EP - 121
BT - 25th International Congress on Sound and Vibration 2018, ICSV 2018
PB - International Institute of Acoustics and Vibration, IIAV
ER -