Three-dimensional radiated sound field display system using directional loudspeakers and wave field synthesis

Toshiyuki Kimura, Yoko Yamakata, Michiaki Katsumoto, Takuma Okamoto, Satoshi Yairi, Yukio Iwaya, Yôiti Suzuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Three-dimensional (3D) radiated sound field display systems are important toward realizing ultra-realistic communications systems such as 3D television. In this paper, a 3D radiated sound field display system using directional loudspeakers and wave field synthesis is proposed. The proposed system is based on the Fresnel-Kirchhoff diffraction formula, which is the approximate form of the Kirchhoff-Helmholtz integral equation. The proposed system was developed by constructing the surrounding microphone array and radiated loudspeaker array. To evaluate the performance of the developed system, the positions of sound images were estimated. The results indicated that the 3D sound field is accurately controlled outside of the radiated loudspeaker array by sharpening the radiation directivity of the loudspeaker units and that the sound images are not correctly estimated in the developed system because the radiation directivity of loudspeaker units is not sufficiently sharp.

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalAcoustical Science and Technology
Volume33
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • Directional loudspeaker
  • Radiated sound field
  • Sound field display
  • Sound image position estimation
  • Wave field synthesis

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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