2012 Fiscal Year Final Research Report
A Novel Method to Extract Sound Information in Light and Achievement of High Performance and Advanced Functions in Optical Wave Microphone
| Project/Area Number |
22560429
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Tokai University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAMATSU Takashi 東海大学, 産業工学部, 准教授 (60299667)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 計測工学 / 音響工学 / 光マイクロホン / レーザ / 音波 |
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| Research Abstract |
We carried out studies to develop the optical wave microphone, which can directly detect sounds by a laser beam without any diaphragm. In the present research report, it is shown that (1) all sound frequencies from audio wave to low-frequency ultrasonic wave can be detected, (2) the sensitivity can be greatly improved by using a co-axial multi-reflection system or an optical resonance system, and (3) the separating measurement of sounds with different incidence angle and the hand control of receiving directivity can be realized by using an optical fiber bundle to detect the spatially-distributed signal light (or the diffracted light by sounds).
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Research Products
(31 results)
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[Journal Article] Acoustic Spectra Characteristics of Atmospheric Pressure Plasma using Optical Wave Microphone2011
Author(s)
T.Nakamiya, F.Mitsugi, T.Suyama, T.Ikegami,K.Ebihara, Y.Sonoda, Y.Iwasaki,S.Aoqui
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Journal Title
Henryka Danuta Stryczewska,Joanna Pawlat, PRZEGLAD ELEKTROTECHNICZNY (Electrical Review)
Volume: Vol.87, No.1
Pages: 249-253
Peer Reviewed
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