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Best practice for positioning sound absorbers at room surface

机译：在房间表面放置吸音器的最佳做法

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摘要

A method to facilitate the efficient positioning of sound absorbing materials on the walls of an enclosure is proposed by quantifying the contribution of each wall segment to the sound field in a vibro-acoustic transfer matrix. Wall reflections can be considered as secondary sources of radiation, whose strengths depend on the primary source and the amount of absorption by the walls. Based on this idea, the proposed evaluation method to quantify the degree of effectiveness for each wall segment is to quantify the linear independence of the rows or columns in a transfer matrix. The multiplication of quantified linear independence of elements in two transfer matrices consisting of the transfer path of sound is suggested as an observation parameter for selection. The proposed method is verified through numerical simulations and experiments. As absorbing patterns are treated at the surfaces with the highest linear independence in the transfer matrix, the sound pressure at most frequencies decreases for a point receiver or a finite region of receivers. The proposed method has advantages in terms of required effort, because it does not require any iteration process. The proposed method can produce a practically applicable solution without any detailed assumptions about the sound source and boundary conditions which are not clearly known at the design stage. (C) 2017 Elsevier Ltd. All rights reserved.
机译：通过量化每个壁段对振动声传递矩阵中声场的贡献，提出了一种有助于将吸声材料有效地放置在外壳壁上的方法。壁反射可被视为次要辐射源，其强度取决于主要辐射源和壁的吸收量。基于此思想，提出的评估每个墙段有效性程度的评估方法是量化传输矩阵中行或列的线性独立性。建议在由声音的传递路径组成的两个传递矩阵中将元素的量化线性独立性相乘，作为选择的观察参数。通过数值模拟和实验验证了该方法的有效性。在传递矩阵中具有最高线性独立性的表面上处理吸声图案时，对于点接收器或接收器的有限区域，大多数频率下的声压会降低。所提出的方法在所需工作量方面具有优势，因为它不需要任何迭代过程。所提出的方法可以产生实际适用的解决方案，而无需对声源和边界条件进行任何详细的假设，而这些假设在设计阶段尚不清楚。 （C）2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Applied Acoustics》 |2018年第1期|306-315|共10页
  • 作者

    Cho Wan-Ho; Ih Jeong-Guon; Katsumata Tomohisa; Toi Takeshi;

  • 作者单位

    Korea Res Inst Stand & Sci, Div Phys Metrol, Ctr Fluid Flow & Acoust, 267 Gajeong Ro, Daejeon 34113, South Korea;

    Korea Adv Inst Sci & Technol, Dept Mech Engn, Ctr Noise & Vibrat Control, Daejeon 34141, South Korea;

    Chuo Univ, Dept Precis Mech, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan;

    Chuo Univ, Dept Precis Mech, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Absorbing patches positioning;

    机译：吸收贴片定位;

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