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Detection method of sound information in light and development of optical wave microphone

Research Project

Project/Area Number 16560376
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionKyushu Tokai University

Principal Investigator

SONODA Yoshito  Kyushu Tokai University, School of Engineering, Professor, 工学部, 教授 (90117143)

Co-Investigator(Kenkyū-buntansha) SAMATSU Takashi  Kyushu Tokai University, School of Information Science, Assistant Professor, 応用情報学部, 講師 (60299667)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2004: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsAcoustic engineering / Audible sound / Optical microphone / Interaction between light and sound / Laser applied measurement / Optical information processing / Ultrasonic wave / Microphone / 音計測 / レーザ計測 / センサ
Research Abstract

The purpose of this research is to develop an optical wave microphone with no diaphragm, which can directly detect audio waves propagating in air by a laser beam. It converts sound signals to electrical signals by detecting the ultra-weak diffraction light generated by phase modulation effect of sounds. In this optical device, the diffraction light having Doppler shifted frequencies by sounds passes through the optical Fourier transform system with a penetrating laser beam and is detected by a photodiode in the optical observing plane. In the present study, the optical information processing system is theoretically and experimentally examined in order to get a best performance of the optical wave microphone. Furthermore, the construction method of laser beam antenna sensing audio waves is experimentally investigated to know how to realize any receiving property needed for practical applications or needs. The obtained main results are as follows :
When sounds interact with a sensing laser beam, the sound signal can be effectively converted to electrical signals by setting the optical observing plane in the proper spatial position, where the optical Fourier transform of the sound incident plane is satisfied. The output signal intensity is proportional to the laser beam waist size, but for the practical uses the beam size of a few mm is desired to easily construct the laser beam transmission.
The relation between the spatial construction or shape of laser beam antenna and the sound receiving property was investigated using double laser beams reflected by a roof mirror. It is shown that the directivity and the signal amplification of the optical wave microphone could be controlled by changing the laser beam construction from one to three dimensions.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (23 results)

All 2006 2005 2004

All Journal Article (22 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 光学的フーリエ変換による可聴音の直接検出のための光学系の検討2006

    • Author(s)
      園田義人
    • Journal Title

      日本音響学会誌 62巻8号

      Pages: 571-579

    • NAID

      110004778129

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Measurement of Low-Frequency Ultrasonic Wave in Water Using an Acoustic Fiber Sensor2006

    • Author(s)
      T.Sakoda, Y.Sonoda
    • Journal Title

      IEEE. Trans. Ultrasonics, Ferroelectrics, and Frequency Control Vol.53, No.4

      Pages: 761-767

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 解説・光波マイクロホンと光情報処理 =光学的フーリエ変換を用いた音の直接非擾乱検出=2006

    • Author(s)
      園田義人
    • Journal Title

      光アライアンス Vol.17, No.12

      Pages: 34-37

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Investigation of optical system for direct detection of audible acoustic wave by optical Fourier transform2006

    • Author(s)
      Y.Sonoda
    • Journal Title

      The journal of the acoustical society of Japan Vol.62, No.8

      Pages: 571-579

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Measurement of low-frequency ultrasonic wave in water using an acoustic fiber sensor2006

    • Author(s)
      T.Sakoda, Y.Sonoda
    • Journal Title

      IEEE. Trans. Ultrasonics, Ferroelectics, and Frequency Control Vol.53, No.4

      Pages: 761-767

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Optical wave microphone and optical information processing--Direct and non-disturbing detection of sound by optical Fourier transform--2006

    • Author(s)
      Y.Sonoda
    • Journal Title

      Optical Alliance Vol.17, No.12

      Pages: 34-37

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Measurement of Low-Frequency Ultrasonic Wave in Water Using an Acoustic Fiber Sensor2006

    • Author(s)
      T.Sakoda, Y.Sonoda
    • Journal Title

      IEEE.Trans.Ultrasonics, Ferroelectrics, and Frequency Control Vol.53, No.4,

      Pages: 761-767

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 光学的フーリエ変換による可聴音の直接検出のための光学系の検討2006

    • Author(s)
      園田義人
    • Journal Title

      日本音響学会誌 掲載予定

      Pages: 8-8

    • NAID

      110004778129

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Measurement of Low-Frequency Ultrasonic Wave in Water Using an Acoustic Fiber Sensor2006

    • Author(s)
      T.Sakoda, Y.Sonoda
    • Journal Title

      IEEE.Trans.Ultrasonics, Ferroelectrics, and Frequency Control Vol.53,No.4

      Pages: 761-767

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 超音速ジェット騒音への光マイクロホンの応用(ジェット騒音測定に関する光マイクロホンの基本特性)2005

    • Author(s)
      高坂, 瀬戸, 中園, 園田
    • Journal Title

      日本機械学会論文集(C編) 71巻、705号

      Pages: 1597-1603

    • NAID

      110006264705

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] 解説・光で音を聞く方法=振動板のない光波マイクロホンの開発=2005

    • Author(s)
      園田義人
    • Journal Title

      光アライアンス Vol.16, No.7

      Pages: 32-39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 光波マイクロホンによる定在音波と進行音波の計測2005

    • Author(s)
      園田, 中園, 大内, 佐松
    • Journal Title

      九州東海大学工学部紀要 No.32

      Pages: 7-12

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Measurement of Supersonic jet noise by means of optical wave microphone (Characteristics of optical wave microphone for measurement of sounds-2005

    • Author(s)
      M.Kosaka, K.Seto, Y.Nakazono, Y.Sonoda
    • Journal Title

      Transactions of the Japan society of mechanical engineers (C) Vol.71, No.705

      Pages: 1597-1603

    • NAID

      110006264705

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Method of hear sounds by light--Development of optical wave microphone with no diaphragm--2005

    • Author(s)
      Y.Sonoda
    • Journal Title

      Optical Alliance Vol.16, No.7

      Pages: 32-39

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Measurement of standing and propagating acoustic waves by optical wave microphone2005

    • Author(s)
      Y.Sonoda, Y.Nakazono, Y.Ouchi, T.Samatsu
    • Journal Title

      Bulletin of School of Engineering, Kyushu Tokai University No.32, 7-12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 解説・光で音を聞く方法=振動板のない光波マイクロホンの開発=2005

    • Author(s)
      園田義人
    • Journal Title

      光アライアンス Vol.16,No.7

      Pages: 32-39

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 広帯域光波マイクロホンの開発と20kHzから100kHz帯の音波測定2005

    • Author(s)
      園田, 中園, 大内, 佐松
    • Journal Title

      九州東海大学工学部紀要 No.32

      Pages: 201-202

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 光情報処理による可聴音の検出と光波マイクロホン2005

    • Author(s)
      園田義人
    • Journal Title

      日本音響学会・春季研究発表会・講演論文集 第I分冊

      Pages: 515-516

    • NAID

      10018038310

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 解説・光で音を聞く方法=振動板のない光波マイクロ音の開発=2005

    • Author(s)
      園田義人
    • Journal Title

      光アライアンス No.5(掲載予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 超音速ジェット騒音への光マイクロホンの応用(ジェット騒音測定に関する光マイクロホンの基本特性)2005

    • Author(s)
      高坂, 瀬戸, 中園, 園田
    • Journal Title

      機械学会論文集 Vol.71(掲載予定)

    • NAID

      110006264705

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 光マイクロホンとその応用について2004

    • Author(s)
      中園与一, 園田義人
    • Journal Title

      第24回流力騒音シンポジウム概要集

      Pages: 6-6

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 光マイクロホン技術によって観察したホールトーンの低減2004

    • Author(s)
      中園, 園田, 川口, 小森
    • Journal Title

      九州東海大学工学部紀要 No.31

      Pages: 25-34

    • Related Report
      2004 Annual Research Report
  • [Patent(Industrial Property Rights)] 光マイクロホン2006

    • Inventor(s)
      園田義人
    • Industrial Property Rights Holder
      学校法人東海大学
    • Industrial Property Number
      2006-008085
    • Filing Date
      2006-01-16
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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