Sound reproduction using the photoacoustic effect

Kaoru Yamabe, Yasuhiro Oikawa, Yoshio Yamasaki

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    One possible solution for generating point sound sources in mid air is the photoacoustic effect: energy transduction from light energy to sound energy. The photoacoustic effect generates sounds from the alternate current components of air expansion due to the heat generated by light absorption of a material when light modulated with acoustic signal is radiated to a material. In order to confirm sound reproduction using the photoacoustic effect, the experiments to reproduce a pure tone and a musical sound is performed. In order to generate louder sound, the light from the halogen lamp is focused on a charcoal, which has high absorptive power since a charcoal is black and spongy. It is shown that a halogen lamp can be modulated with acoustic signal although the amplitude of higher frequency components is reduced because of the response speed of halogen lamp. Next, the experiments of sound reproduction using a halogen lamp and a charcoal were performed.

    Original languageEnglish
    Pages (from-to)59-61
    Number of pages3
    JournalAcoustical Science and Technology
    Volume35
    Issue number1
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    acoustics
    halogens
    charcoal
    luminaires
    air
    electromagnetic absorption
    energy
    heat
    expansion

    Keywords

    • Halogen lamp
    • Photoacoustic effect

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Sound reproduction using the photoacoustic effect. / Yamabe, Kaoru; Oikawa, Yasuhiro; Yamasaki, Yoshio.

    In: Acoustical Science and Technology, Vol. 35, No. 1, 2014, p. 59-61.

    Research output: Contribution to journalArticle

    Yamabe, Kaoru ; Oikawa, Yasuhiro ; Yamasaki, Yoshio. / Sound reproduction using the photoacoustic effect. In: Acoustical Science and Technology. 2014 ; Vol. 35, No. 1. pp. 59-61.
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