Sound field equalization by active acoustic impedance control

Jyunji Hagio, Akihiro Kakiuchi, Akira Omoto

    Research output: Contribution to conferencePaperpeer-review

    2 Citations (Scopus)

    Abstract

    This study examined sound field equalization using active control. The specific acoustic impedance, the ratio of sound pressure and particle velocities were adopted as a source of control. Providing the impedance in the aimed direction was controlled to be the characteristic impedance of the medium, the propagating plane wave in any particular direction was expected. In addition, the directional characteristic of the sound propagation was also controlled by adjusting the weight of ratios of pressure and velocity in three orthogonal directions. The results of numerical simulations indicated the potential efficiency of the proposed method. Furthermore, results of subjective experiments showed the possibility of the proposed control changing the perceived direction of the incoming sound.

    Original languageEnglish
    Publication statusPublished - 2011
    EventAES 40th International Conference on Spatial Audio: Sense the Sound of Space - Tokyo, Japan
    Duration: Oct 8 2010Oct 10 2010

    Other

    OtherAES 40th International Conference on Spatial Audio: Sense the Sound of Space
    Country/TerritoryJapan
    CityTokyo
    Period10/8/1010/10/10

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering
    • Acoustics and Ultrasonics

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