Measurement of sound pressure inside tube using optical interferometry

Denny Hermawanto, Kenji Ishikawa, Kohei Yatabe, Yasuhiro Oikawa

    Research output: Contribution to conferencePaper

    Abstract

    Measurement of sound pressure inside a tube is important for duct acoustics and microphone calibration. Inserting microphone directly into sound field will disturb the field and produce inaccurate measurement result. Recently, non-intrusive sound pressure measurement using optical techniques have been proposed. A laser Doppler vibrometer is used to measure line integrals of sound pressure yield projections and a reconstruction technique is then applied to recover the original sound field from projections. In this paper, measurement of sound pressure distribution using optical method is proposed to realize direct pressure measurement for microphone calibration. A simulation of sound field reconstruction from projections using filtered back-projection technique was developed and the performance was evaluated. The reconstruction performance was evaluated for the projection of plane wave and point source wave of frequency from 1000 Hz to 16000 Hz. The implementation of the proposed method for reconstruction of sound field inside an acrylic tube diameter 61.75 mm, length 22 mm, and thickness 3.5 mm for 1000 Hz sound source from projection using laser Doppler vibrometer was performed. The result shows that the proposed method was able to reconstruct the sound field inside tube and measure pressure distribution.

    Original languageEnglish
    Publication statusPublished - 2018 Jan 1
    Event47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States
    Duration: 2018 Aug 262018 Aug 29

    Other

    Other47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018
    CountryUnited States
    CityChicago
    Period18/8/2618/8/29

    Fingerprint

    sound pressure
    sound fields
    interferometry
    projection
    tubes
    microphones
    vibration meters
    pressure measurement
    pressure distribution
    acoustic ducts
    point sources
    lasers
    plane waves
    optics
    acoustics
    simulation

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Hermawanto, D., Ishikawa, K., Yatabe, K., & Oikawa, Y. (2018). Measurement of sound pressure inside tube using optical interferometry. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.

    Measurement of sound pressure inside tube using optical interferometry. / Hermawanto, Denny; Ishikawa, Kenji; Yatabe, Kohei; Oikawa, Yasuhiro.

    2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.

    Research output: Contribution to conferencePaper

    Hermawanto, D, Ishikawa, K, Yatabe, K & Oikawa, Y 2018, 'Measurement of sound pressure inside tube using optical interferometry' Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States, 18/8/26 - 18/8/29, .
    Hermawanto D, Ishikawa K, Yatabe K, Oikawa Y. Measurement of sound pressure inside tube using optical interferometry. 2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
    Hermawanto, Denny ; Ishikawa, Kenji ; Yatabe, Kohei ; Oikawa, Yasuhiro. / Measurement of sound pressure inside tube using optical interferometry. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
    @conference{39d957902868479d86c2dc9f0478a5f2,
    title = "Measurement of sound pressure inside tube using optical interferometry",
    abstract = "Measurement of sound pressure inside a tube is important for duct acoustics and microphone calibration. Inserting microphone directly into sound field will disturb the field and produce inaccurate measurement result. Recently, non-intrusive sound pressure measurement using optical techniques have been proposed. A laser Doppler vibrometer is used to measure line integrals of sound pressure yield projections and a reconstruction technique is then applied to recover the original sound field from projections. In this paper, measurement of sound pressure distribution using optical method is proposed to realize direct pressure measurement for microphone calibration. A simulation of sound field reconstruction from projections using filtered back-projection technique was developed and the performance was evaluated. The reconstruction performance was evaluated for the projection of plane wave and point source wave of frequency from 1000 Hz to 16000 Hz. The implementation of the proposed method for reconstruction of sound field inside an acrylic tube diameter 61.75 mm, length 22 mm, and thickness 3.5 mm for 1000 Hz sound source from projection using laser Doppler vibrometer was performed. The result shows that the proposed method was able to reconstruct the sound field inside tube and measure pressure distribution.",
    author = "Denny Hermawanto and Kenji Ishikawa and Kohei Yatabe and Yasuhiro Oikawa",
    year = "2018",
    month = "1",
    day = "1",
    language = "English",
    note = "47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 ; Conference date: 26-08-2018 Through 29-08-2018",

    }

    TY - CONF

    T1 - Measurement of sound pressure inside tube using optical interferometry

    AU - Hermawanto, Denny

    AU - Ishikawa, Kenji

    AU - Yatabe, Kohei

    AU - Oikawa, Yasuhiro

    PY - 2018/1/1

    Y1 - 2018/1/1

    N2 - Measurement of sound pressure inside a tube is important for duct acoustics and microphone calibration. Inserting microphone directly into sound field will disturb the field and produce inaccurate measurement result. Recently, non-intrusive sound pressure measurement using optical techniques have been proposed. A laser Doppler vibrometer is used to measure line integrals of sound pressure yield projections and a reconstruction technique is then applied to recover the original sound field from projections. In this paper, measurement of sound pressure distribution using optical method is proposed to realize direct pressure measurement for microphone calibration. A simulation of sound field reconstruction from projections using filtered back-projection technique was developed and the performance was evaluated. The reconstruction performance was evaluated for the projection of plane wave and point source wave of frequency from 1000 Hz to 16000 Hz. The implementation of the proposed method for reconstruction of sound field inside an acrylic tube diameter 61.75 mm, length 22 mm, and thickness 3.5 mm for 1000 Hz sound source from projection using laser Doppler vibrometer was performed. The result shows that the proposed method was able to reconstruct the sound field inside tube and measure pressure distribution.

    AB - Measurement of sound pressure inside a tube is important for duct acoustics and microphone calibration. Inserting microphone directly into sound field will disturb the field and produce inaccurate measurement result. Recently, non-intrusive sound pressure measurement using optical techniques have been proposed. A laser Doppler vibrometer is used to measure line integrals of sound pressure yield projections and a reconstruction technique is then applied to recover the original sound field from projections. In this paper, measurement of sound pressure distribution using optical method is proposed to realize direct pressure measurement for microphone calibration. A simulation of sound field reconstruction from projections using filtered back-projection technique was developed and the performance was evaluated. The reconstruction performance was evaluated for the projection of plane wave and point source wave of frequency from 1000 Hz to 16000 Hz. The implementation of the proposed method for reconstruction of sound field inside an acrylic tube diameter 61.75 mm, length 22 mm, and thickness 3.5 mm for 1000 Hz sound source from projection using laser Doppler vibrometer was performed. The result shows that the proposed method was able to reconstruct the sound field inside tube and measure pressure distribution.

    UR - http://www.scopus.com/inward/record.url?scp=85059364950&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85059364950&partnerID=8YFLogxK

    M3 - Paper

    AN - SCOPUS:85059364950

    ER -