1.1 本试验方法涵盖了使用标准攻丝机在实验室测量地板结构的冲击声辐射。虽然完工地板表面通常是主要因素，但必须注意的是，完工地板下方的地板结构也在源室内因地板表面受到影响而产生的噪声水平中起着主要作用。因此，报告必须包括完整楼层结构及其支撑的完整描述（例如，仅周边支撑、多点支撑或完全连续支撑，如地面上的楼板）。 假设试验室中敲击机产生的冲击声很好地近似于扩散声场。 1.2 可以对各种地板结构进行测量，包括带有浮动地板或吊顶元件或两者，以及表面有任何类型地板表面或地板覆盖材料的地板-天花板组件。 1.3 本试验方法规定了一个统一的程序，用于报告三分之一倍频程频带内的实验室试验数据和攻丝机冲击地板结构（试样）产生的总a加权声功率级。 1.4 实验室认证- 认证实验室执行本试验方法的要求见 附件A2 . 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本标准提供了一种测量房间内通过冲击同一房间内给定地板表面而产生的声功率水平的方法。测试结果可用于比较不同完工地板表面上攻丝机冲击噪声的相对声功率。 由此产生的数据可用于比较脚踩和意外落在地板上的物体产生的不必要噪音的相对水平。 5.2 地板撞击产生的声功率频谱和声级由以下因素决定: 5.2.1 地板结构的机械特性，例如其尺寸、结构、表面、安装或边缘约束、刚度或内部阻尼， 5.2.2 测试室的测量声学特性， 5.2.3 产生冲击的物体或装置的位置，以及 5.2.4 影响的性质。 5.3 本试验方法基于使用标准攻丝机，该攻丝机的类型如 8.1 放置在地板上的特定位置。该机器在测试地板上以均匀速率产生连续的一系列均匀冲击，并产生宽带声压级，该声压级足够高，即使在存在背景噪声的情况下，也可以对大多数地板类型进行测量。然而，攻丝机本身的设计不是为了模拟任何一种类型的冲击，例如由男性或女性足迹产生的冲击。 5.4 由于其便携式设计，攻丝机无法模拟人类步行者的重量。实验室攻丝机测试结果与国内冲击激励典型条件下地板的主观验收之间的相关性程度不确定。相关性将取决于楼层结构的类型和建筑物中冲击激励的性质。 5.5 本试验方法不适用于现场试验。

1.1 This test method covers the laboratory measurement of impact sound radiation from floor structures using a standardized tapping machine. While the finished floor surface is usually the primary factor, it must be noted that the floor structure below the finished floor also plays a major role in the level of noise generated in the source room by impacts to the floor surface. As a result, the report must include a full description of the complete floor structure and its support (for example, perimeter support only, multiple point supports, or full continuous support like a slab on grade). It is assumed that the impact sound generated by the tapping machine in the test room is a good approximation to a diffuse sound field. 1.2 Measurements may be conducted on floor structures of all kinds, including those with floating-floor or suspended ceiling elements, or both, and floor-ceiling assemblies surfaced with any type of floor-surfacing or floor-covering materials. 1.3 This test method prescribes a uniform procedure for reporting laboratory test data in both one-third-octave-band and overall A-weighted sound power levels generated by the tapping machine impacts on the floor structure (test specimen). 1.4 Laboratory Accreditation— The requirements for accrediting a laboratory for performing this test method are given in Annex A2 . 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This standard provides a method to measure the level of sound power generated in a room by impacts on a given floor surface within the same room. The test results could be used to compare the relative sound power of tapping machine impact noise on various finished floor surfaces. The resulting data could be used for comparing relative levels of unwanted noise from footfalls and objects accidentally dropped on the floor. 5.2 The spectrum and level of the sound power produced by floor impacts is determined by: 5.2.1 The mechanical properties of the floor structure, such as its size, construction, surface, mounting or edge restraints, stiffness, or internal damping, 5.2.2 The measured acoustical characteristics of the test room, 5.2.3 The location of the object or device producing the impacts, and 5.2.4 The nature of the impact. 5.3 This test method is based on the use of a standard tapping machine of the type specified in 8.1 placed in specific positions on the floor. This machine produces a continuous series of uniform impacts at a uniform rate on a test floor and generates broadband sound pressure levels that are sufficiently high to make measurements possible with most floor types even in the presence of background noise. The tapping machine itself, however, is not designed to simulate any one type of impact, such as produced by male or female footsteps. 5.4 Because of its portable design, the tapping machine does not simulate the weight of a human walker. The degree of correlation between the results of tapping machine tests in the laboratory and the subjective acceptance of floors under typical conditions of domestic impact excitation is uncertain. The correlation will depend on both the type of floor construction and the nature of the impact excitation in the building. 5.5 This test method is not intended for field tests.