Realizing Directional Sound Source in FDTD Method by Estimating Initial Value

Daiki Takeuchi, Kohei Yatabe, Yasuhiro Oikawa

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    Wave-based acoustic simulation methods are studied actively for predicting acoustical phenomena. Finite-difference time-domain (FDTD) method is one of the most popular methods owing to its straightforwardness of calculating an impulse response. In an FDTD simulation, an omnidirectional sound source is usually adopted, which is not realistic because the real sound sources often have specific directivities. However, there is very little research on imposing a directional sound source into FDTD methods. In this paper, a method of realizing a directional sound source in FDTD methods is proposed. It is formulated as an estimation problem of the initial value so that the estimated result corresponds to the desired directivity. The effectiveness of the proposed method is illustrated through some numerical experiments.

    本文言語English
    ホスト出版物のタイトル2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ461-465
    ページ数5
    2018-April
    ISBN(印刷版)9781538646588
    DOI
    出版ステータスPublished - 2018 9 10
    イベント2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Calgary, Canada
    継続期間: 2018 4 152018 4 20

    Other

    Other2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018
    CountryCanada
    CityCalgary
    Period18/4/1518/4/20

    ASJC Scopus subject areas

    • Software
    • Signal Processing
    • Electrical and Electronic Engineering

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