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
N1 - Publisher Copyright:
© 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
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
AN - SCOPUS:85058688807
T3 - 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling
SP - 115
EP - 121
BT - 25th International Congress on Sound and Vibration 2018, ICSV 2018
PB - International Institute of Acoustics and Vibration, IIAV
T2 - 25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018
Y2 - 8 July 2018 through 12 July 2018
ER -