Backscattering measurement method for sound field using pulsed laser

Kenji Ishikawa, Yasuhiro Oikawa, Yoshio Yamasaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    This paper presents a sound field measurement method utilizing light scattering. Since the intensity of scattered light is proportional to density of scatterers, the fluctuation of air density, which is corresponding to sound pressure, can be acquired by observing the light scattered by air particles. The light scattered in the sound field, therefore, includes the sound information in its intensity. The measurement apparatus is composed of a pulsed laser, a telescope and a photo-multiplier tube (PMT). The backscattered light is collected by the telescope and detected by the PMT. Using the pulsed laser and detecting the backscattered light enable to acquire sound quantity of an arbitrary point on optical light path by controlling signal acquisition timing. The results of the fundamental experiments confirm a validity of this method.

    Original languageEnglish
    Title of host publicationProceedings of Forum Acusticum
    PublisherEuropean Acoustics Association, EAA
    Volume2014-January
    ISBN (Print)9788361402282
    Publication statusPublished - 2014
    Event7th Forum Acusticum, FA 2014 - Krakow, Poland
    Duration: 2014 Sep 72014 Sep 12

    Other

    Other7th Forum Acusticum, FA 2014
    CountryPoland
    CityKrakow
    Period14/9/714/9/12

    Fingerprint

    sound fields
    pulsed lasers
    backscattering
    photomultiplier tubes
    telescopes
    acoustics
    air
    sound pressure
    acquisition
    light scattering
    time measurement
    scattering

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Ishikawa, K., Oikawa, Y., & Yamasaki, Y. (2014). Backscattering measurement method for sound field using pulsed laser. In Proceedings of Forum Acusticum (Vol. 2014-January). European Acoustics Association, EAA.

    Backscattering measurement method for sound field using pulsed laser. / Ishikawa, Kenji; Oikawa, Yasuhiro; Yamasaki, Yoshio.

    Proceedings of Forum Acusticum. Vol. 2014-January European Acoustics Association, EAA, 2014.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Ishikawa, K, Oikawa, Y & Yamasaki, Y 2014, Backscattering measurement method for sound field using pulsed laser. in Proceedings of Forum Acusticum. vol. 2014-January, European Acoustics Association, EAA, 7th Forum Acusticum, FA 2014, Krakow, Poland, 14/9/7.
    Ishikawa K, Oikawa Y, Yamasaki Y. Backscattering measurement method for sound field using pulsed laser. In Proceedings of Forum Acusticum. Vol. 2014-January. European Acoustics Association, EAA. 2014
    Ishikawa, Kenji ; Oikawa, Yasuhiro ; Yamasaki, Yoshio. / Backscattering measurement method for sound field using pulsed laser. Proceedings of Forum Acusticum. Vol. 2014-January European Acoustics Association, EAA, 2014.
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