Time domain large-scale finite element sound field analysis of a multi-purpose hall

Toru Otsuru, Takeshi Okuzono, Noriko Okamoto, Kota Isobe, Hiroshi Furuya

研究成果: Conference contribution

5 引用 (Scopus)

抜粋

The authors have been developing Large-scale Finite Element Sound Field Analysis, or LsFE-SFA for short, to analyze sound fields in architectural rooms with complicated boundary conditions. The main purpose of this paper is to show its applicability and accuracy when a realistic large-scale sound field is to be analyzed in the time domain. A multi-purpose hall (A-hall, for short) with the volume of more than 37, 000 m3 and about 2, 500 seats is analyzed hereafter. At first, both mathematical basis of time domain LsFE-SFA is explained briefly. Then, both frequency and time domain LsFE-SFA were applied onto the sound field in A-hall. In the analyses, two types of boundary modeling, with or without balcony, were given into the computations. The values of absorption coefficient of materials except auditorium side-walls were given by referring literatures, and that of side-walls were given by in-situ measurement following some of the authors' EA-Noise method. By the frequency domain LsFE-SFA, sound pressure level distribution contour maps at 63 and 125 Hz were computed and the results were confirmed to be good. Then, the 1/3 octave band filtered impulse responses centered at 63 Hz and 125 Hz were computed by the time domain LsFE-SFA, and fair agreements with measured data were found. Finally, the results by the time domain LsFE-SFA were transformed into the frequency domain and the relative sound pressure level distributions of them showed excellent agreement with those computed by the frequency domain LsFE-SFA directly.

元の言語English
ホスト出版物のタイトル14th International Congress on Sound and Vibration 2007, ICSV 2007
ページ2442-2449
ページ数8
出版物ステータスPublished - 2007 12 1
イベント14th International Congress on Sound and Vibration 2007, ICSV 2007 - Cairns, QLD, Australia
継続期間: 2007 7 92007 7 12

出版物シリーズ

名前14th International Congress on Sound and Vibration 2007, ICSV 2007
3

Conference

Conference14th International Congress on Sound and Vibration 2007, ICSV 2007
Australia
Cairns, QLD
期間07/7/907/7/12

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • これを引用

    Otsuru, T., Okuzono, T., Okamoto, N., Isobe, K., & Furuya, H. (2007). Time domain large-scale finite element sound field analysis of a multi-purpose hall. : 14th International Congress on Sound and Vibration 2007, ICSV 2007 (pp. 2442-2449). (14th International Congress on Sound and Vibration 2007, ICSV 2007; 巻数 3).