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Development of body-conducted speech microphone using Optical Fiber Bragg Grating for supporting Magnetic Resonance Imaging operation

使用光纤布拉格光栅开发体导语音麦克风以支持磁共振成像操作

基本信息

批准号：
22700189
负责人：
NAKAYAMA Masashi
金额：
$ 1.66万
依托单位：
Kagawa National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Young Scientists (B)
财政年份：
2010
资助国家：
日本
起止时间：
2010 至 2011
项目状态：
已结题

项目摘要

Recently, it is increasing the necessity of precisely inspections in the medical front because Japan is rapidly aging. Because of the reason, lots of medical diagnoses systems are employed for precisely inspections for keep the people healthy. Magnetic Resonance Imaging(MRI), one of diagnoses systems for inspection at medical front using magnetic resonance method, give out a high magnetic field and noisy sound such as about 100-dB Sound Pressure Level(SPL) above when it imagines the images. Thus, a communication between a patient and an operator is used an Optical Fiber Bragg Grating(OFBG) microphone which composed of non-magnetic materials because the room does not arrow to bring the conventional microphone composed of magnetic materials however the OFBG microphone does not measure a signal in frequency characteristics for the communication. From these reasons, the author is proposed the development of the body-conducted speech microphone(BCS) using OFBG which the speech is robust signal against air-conducted noise because it is difficult to influence by the noise. In the research, the effectiveness of signal measurement is shown with time-frequency analysis compares to the speech measured accelerometer such as a conventional BCS microphone. And it is proven the experiments that a clearly signal is estimated from the signal measured by BCS microphone for OFBG with our signal retrieval method which are used differential acceleration and noise reduction method.

近年来，由于日本正在迅速老龄化，因此在医疗领域进行精确检查的必要性正在增加。因此，许多医疗诊断系统被用来进行精确的检查，以保持人们的健康。磁共振成像（Magnetic Resonance Imaging，MRI）是利用磁共振方法在医学前沿进行检查的诊断系统之一，它在成像时会产生高磁场和噪声，例如约100 dB声压级（Sound Pressure Level，SPL）以上。因此，患者和操作者之间的通信使用由非磁性材料组成的光纤布拉格光栅（OFBG）麦克风，因为房间不带由磁性材料组成的常规麦克风，但是OFBG麦克风不测量用于通信的频率特性中的信号。基于这些原因，作者提出了利用OFBG的体导语音麦克风（BCS）的发展，其中语音是对空气传导噪声的鲁棒信号，因为它很难受到噪声的影响。在研究中，信号测量的有效性与时间-频率分析相比，语音测量加速度计，如传统的BCS麦克风。实验证明，本文提出的基于差分加速度和噪声抑制的信号恢复方法能够从BCS麦克风测量的信号中提取出清晰的信号。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Fundamental research on a body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy

使用光纤布拉格光栅的体传导语音麦克风的高磁场和噪声基础研究

DOI：
发表时间：
2011
期刊：
影响因子：
0
作者：
M.Nakayama;et al
通讯作者：
et al

組込み技術を用いた創造的センサシステムの開発教育

使用嵌入式技术进行创意传感器系统的开发教育

DOI：
发表时间：
2011
期刊：
影响因子：
0
作者：
中山仁史;向井しのぶ
通讯作者：
向井しのぶ

Fundamental research on a body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy environments

针对高磁场和噪声环境使用光纤布拉格光栅的体导语音麦克风的基础研究

DOI：
发表时间：
2011
期刊：
Proceedings of the 41st International Congress and Exposition on Noise Control Engineering
影响因子：
0
作者：
Masashi Nakayama;Shunsuke Ishimitsu;Hayato Nagoshi;Seiji Nakagawa;Kazutoshi Fukui
通讯作者：
Kazutoshi Fukui

Sound quality improvement of body-conducted speech from Optical Fiber Brags Grating microphone using differential acceleration and noise

使用差分加速度和噪声改善光纤布拉格光栅麦克风的身体传导语音的音质