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논문 기본 정보

자료유형
학술대회자료
저자정보
Keong-Tae Yeom (원광대학교) Kwan-Kyu Kim (원광대학교) Hwa-Young Choi (원광대학교) Byeong-Man Kwon (원광대학교) Yong-Kab Kim (원광대학교)
저널정보
대한전자공학회 ICEIC : International Conference on Electronics, Informations and Communications ICEIC : 2008
발행연도
2008.6
수록면
1,067 - 1,070 (4page)

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초록· 키워드

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This paper, in order to analyze property of frequency response in Sound measurment system using optical sensor, system was implemented. The capacitance microphone and fiber-optic transmission path type fiberoptic microphone (FOM) have weaknesses in directivity, size, weight, and price. However suggested optical microphone can be constituted by cheap devices, so it has many benefits like small size, light weight, high directivity, etc. Head part of optical microphone which is suggested in this paper is movable back and forth by sound pressure with the attached reflection plate. Operating point is determined by measuring the respond characteristics and choosing the point on which has maximum linearity and sensitivity while changing the distance between optical head and vibrating plate. We measured the output of the O/E transformed signal of the optical microphone while frequency of sound signal is changed using sound measuremnet/analysis program, "Smaart Live" and "USBPre", which are based on PC, and compared the result from an existing capacitance microphone. The measured Optical microphone showed almost similar output characteristics as those of the compared condenser microphone, and its bandwidth performance was about 3㎑ at up to 5 ㏈.

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Abstract
1. Introduction
2. Structure of optical-microphone and its mechanism
3. Conclusions
Acknowledgments
References

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