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 |
Section | 一般 |
Research Field |
Measurement engineering
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Research Institution | Tokai University |
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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Project Status |
Completed (Fiscal Year 2012)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | 計測工学 / 音響工学 / 光マイクロホン / レーザ / 音波 / 可聴音 / レーザー / 音計測 / 超音波 / 音 / 光情報処理 / 光音相互作用 |
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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Report
(4 results)
Research Products
(57 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
Related Report
Peer Reviewed
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