Uncertainty examination of ensemble averaging method for sound absorption of materials in a reverberation room

被引：3
|
作者：
Otsuru, Toru [1 ]
Tomiku, Reiji [1 ]
Okamoto, Noriko [2 ]
Ueda, Emi [3 ]
Nakamura, Asami [3 ]
机构：
[1] Oita Univ, Fac Engn, 700 Dannoharu, Oita 8701192, Japan
[2] Ariake Natl Coll Technol, Dept Architecture, 150 Higashi Hagio Machi, Omuta 8368585, Japan
[3] Oita Univ, Grad Sch Engn, 700 Dannoharu, Oita 8701192, Japan
来源：
ACOUSTICAL SCIENCE AND TECHNOLOGY | 2016年 / 37卷 / 03期
关键词：
Sound absorption measurement; Computational room acoustics simulation; Uncertainty;
D O I：
10.1250/ast.37.129
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A study is conducted to perform uncertainty examination of ensemble averaging (EA) method for sound absorption of materials in a reverberation room. Theoretical basis of EA method is described, proposing a mathematical-physical model of ensemble averaging to clarify the definition of measured absorption with respect to sound incident events. The knowhow is described to measure the absorptions of reflective materials with a pressure-velocity sensor. A series of repeated measurements are conducted to assess the uncertainty of EA method on both absorptive and reflective materials in the frequency region of 100 Hz to 1,500 Hz.
引用
收藏
页码：129 / 132
页数：4
相关论文
共 50 条
  • [21] Variations in sound absorption coefficients as obtained by the reverberation chamber method
    Morris, RM
    Nixon, GM
    Parkinson, JS
    JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1938, 9 (03): : 234 - 243
  • [22] Comparison the Sound Absorption Rate of Mandarin Peel - Sawdust Composite Boards Measured by Transfer Function Method with by Reverberation Room Method
    Kang, Chun-Won
    Li, Cheng-Yuan
    Kang, Ho-Yang
    Kang, Seog-Goo
    Jang, Sang-Sik
    Matsumura, Junji
    JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY, 2019, 64 (01): : 107 - 111
  • [23] A PROBABILISTIC METHOD FOR THE EVALUATION OF SOUND INTENSITY FLUCTUATIONS IN AN ABSORBENT REVERBERATION ROOM
    OHTA, M
    MIYATA, S
    KOTERA, Y
    ACUSTICA, 1990, 71 (02): : 147 - 151
  • [24] Use of finite element method for comparison of sound field diffuseness in reverberation rooms with and without absorption materials
    Tomiku, Reiji
    Otsuru, Toru
    Azuma, Daisuke
    Takahashi, Yasuo
    ACOUSTICAL SCIENCE AND TECHNOLOGY, 2005, 26 (02) : 225 - 228
  • [25] Comparison of sound absorption characteristics measured by impedance tube method and ensemble averaging technique on porous clay bricks
    Lawanwadeekul, Siwat
    Tomiku, Reiji
    Okamoto, Noriko
    Otsuru, Toru
    Masuda, Masahiro
    Matsuoka, Yasuyuki
    ACOUSTICAL SCIENCE AND TECHNOLOGY, 2021, 42 (03) : 154 - 157
  • [26] Reverberation suppression method based on diffuse information in a room sound field
    Fu, Q. (qfu@hccl.ioa.ac.cn), 1600, Tsinghua University (53):
  • [27] Reverberation-room method for sound power determination at low frequencies
    Chu, WT
    INTER-NOISE 99: PROCEEDINGS OF THE 1999 INTERNATIONAL CONGRESS ON NOISE CONTROL ENGINEERING, VOLS 1-3, 1999, : 1417 - 1420
  • [28] Estimation methods for sound levels and reverberation time in a room with irregular shape or absorption distribution
    Gerretsen, Eddy
    ACTA ACUSTICA UNITED WITH ACUSTICA, 2006, 92 (05) : 797 - 806
  • [29] Reverberation room design optimisation for low-frequency diffuse sound absorption testing
    Didier, Paul
    Van Hoorickx, Cedric
    Reynders, Edwin P. B.
    APPLIED ACOUSTICS, 2025, 228
  • [30] THE EFFECT OF THE ROOM SHAPE ON THE SOUND FIELD IN ROOMS - (STUDIES ON THE MEASUREMENT OF ABSORPTION COEFFICIENT BY THE REVERBERATION CHAMBER METHOD .1.
    SATO, K
    KOYASU, M
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1959, 14 (03) : 365 - 373
12345