Realtime Acoustic Model for Virtual Environments

DOI Web Site 5 References
  • Tsuru Daisuke
    Graduate School of Information Science & Engineering Tokyo Institute of Technology
  • Takahashi Hiroki
    Graduate School of Information Science & Engineering Tokyo Institute of Technology
  • Nakajima Masayuki
    Graduate School of Information Science & Engineering Tokyo Institute of Technology

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Other Title
  • 仮想環境における実時間音響モデル
  • カソウ カンキョウ ニ オケル ジツジカン オンキョウ モデル

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Abstract

Hearing has features such that emphasize the presence of objects and perceive what cannot be visible. So it is important to utilize spatial acoustics for virtual environments to strengthen realistics sensations, whereas the study for realtime generation of spatial acoustics has not been done much. Our goal is to generate realtime spatial acoustics in complex virtual environments. First we propose an acoustic model which models diffraction and reflection, and considers their approximations of frequency characteristic and the way to mix diffraction and reflection. Then, we propose data structures which can determine sound ray paths efficiently. We use visible graph for searching diffract paths, and cell adjacency graph for reflect paths. These methods make it possible to generate impulse responses at complex sound field like ordinary architecture in realtime.

Journal

  • ITE Technical Report

    ITE Technical Report 25.29 (0), 139-144, 2001

    The Institute of Image Information and Television Engineers

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