ISO 3744:2010规定了根据在一个或多个反射面附近近似于无声场的环境中包围噪声源（机械或设备）的表面上测量的声压级确定噪声源声功率级或声能级的方法。使用这些测量值计算噪声源在频带内或在应用频率A加权的情况下产生的声功率级（或者，在噪声突发或瞬态噪声发射的情况下，声能量级）。 ISO 3744:2010中规定的方法适用于ISO 12001中定义的所有类型的噪声（稳定、非稳定、波动、孤立声能爆发等）。 ISO 3744:2010适用于所有类型和尺寸的噪声源（例如，静止或缓慢移动的设备、装置、机器、部件或子部件）- 装配），前提是能够满足测量条件。 适用于根据ISO 3744:2010进行测量的试验环境可位于室内或室外，且一个或多个声反射面位于安装被测噪声源的表面或附近。理想环境是一个完全开放的空间，除了反射面（例如由合格的半消声室提供的反射面）之外，没有任何边界或反射面，但在环境不理想的情况下，给出了应用校正的程序（在规定的限值内）。 给出了根据ISO 3744:2010确定的声功率级和声能级的不确定度信息，用于在有限频带内进行测量，并应用了频率A加权。不确定度符合ISO 12001: 1996年，精度等级2（工程级）。

ISO 3744:2010 specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands or with frequency A-weighting applied, is calculated using those measurements. The methods specified in ISO 3744:2010 are suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001. ISO 3744:2010 is applicable to all types and sizes of noise source (e.g. stationary or slowly moving plant, installation, machine, component or sub-assembly), provided the conditions for the measurements can be met. The test environments that are applicable for measurements made in accordance with ISO 3744:2010 can be located indoors or outdoors, with one or more sound-reflecting planes present on or near which the noise source under test is mounted. The ideal environment is a completely open space with no bounding or reflecting surfaces other than the reflecting plane(s) (such as that provided by a qualified hemi-anechoic chamber), but procedures are given for applying corrections (within limits that are specified) in the case of environments that are less than ideal. Information is given on the uncertainty of the sound power levels and sound energy levels determined in accordance with ISO 3744:2010, for measurements made in limited bands of frequency and with frequency A-weighting applied. The uncertainty conforms to ISO 12001:1996, accuracy grade 2 (engineering grade).