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
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