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Airborne sound insulation in terms of a loudness model

机译：根据响度模型的机载隔音

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摘要

One of the main goals of building acoustics is the prediction of airborne sound insulation between rooms to determine the quality of sound protection. In many practical cases, however, the objective measures of the airborne sound insulation using procedures in standards are not in agreement with the subjective assessment. This paper, therefore, after reviewing the conventional model to calculate airborne sound insulation, introduces a calculation scheme based on loudness level linked with specific fluctuation strength, yielding a weighted normalised loudness level difference, L_(nor,w). By analysing the difference between standard airborne sound insulation values and the introduced weighted normalised loudness level difference, it is revealed that the sound pressure level that is transmitted through a partition decreases with increasing frequency, and this is independent of the type of signal and of the airborne sound insulation values (R'_w -values), whereas if the transmitted signal is converted into a loudness level, it tends to rise with increasing frequency. Moreover, it is found that, whereas a simple level difference does not exhibit the effect of a given signal to the frequency-dependent airborne sound insulation curve, using L_(nor,w), a significant change can be observed, in terms of both computed and measured results. Furthermore, the fequency-dependent results allow more details to be investigated for a certain sound insulation. A comparison between the measured and predicted airborne sound insulation with no obvious malfunction suggests that at some frequency ranges, a hypothetical subjective related failure might occur. Overall, the proposed L_(nor,w) could reveal detailed insights into the in situ measured airborne sound insulation compared with standard airborne sound insulation values. The frequency-dependent values discussed in this paper form a basis for developing a single-number index.
机译：建筑声学的主要目标之一是预测房间之间的空气传播隔声，从而确定隔音效果。但是，在许多实际情况下，使用标准中的程序对机载隔音材料进行的客观测量与主观评估不一致。因此，本文在回顾了常规模型以计算空气传播的隔音效果之后，介绍了一种基于响度水平与特定波动强度相关的计算方案，得出加权归一化响度水平差L_（nor，w）。通过分析标准空气传播的隔音值与引入的加权归一化响度级别差异之间的差异，可以看出，通过隔板传输的声压级会随着频率的升高而降低，这与信号的类型和声压级无关。空气传播的隔声值（R'_w-值），而如果将传输的信号转换为响度级别，则它会随着频率的增加而上升。此外，发现使用L_（nor，w），尽管简单的电平差不显示给定信号对频率相关的空气传播的隔音曲线的影响，但在这两个方面都可以观察到显着的变化。计算和测量结果。此外，依赖于频率的结果还可以研究特定隔音材料的更多细节。在没有明显故障的情况下，对测得的和预计的空气传播隔声进行了比较，表明在某些频率范围内，可能会发生假设的主观相关故障。总体而言，拟议的L_（nor，w）可以揭示与标准机载隔音值相比现场测量的机载隔音的详细见解。本文讨论的频率相关值构成了开发单数索引的基础。

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  • 来源
    《Applied Acoustics》 |2014年第11期|34-45|共12页
  • 作者

    Reinhard O. Neubauer; Jian Kang;

  • 作者单位

    School of Architecture, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom;

    School of Architecture, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom;

  • 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

    Sound protection; Airborne sound insulation; Rating;

    机译：隔音功能;机载隔音材料;评分;

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