IEC 61400-11:2012（E）介绍了能够描述风力涡轮机噪声排放特征的测量程序。这涉及在靠近机器的位置使用适用于噪声排放评估的测量方法，以避免由于声音传播而产生的误差，但距离足够远，以允许有限的声源大小。所述程序在某些方面与社区噪声研究中用于噪声评估的程序不同。它们旨在促进风力涡轮机噪声在一系列风速和方向上的特性描述。测量程序的标准化也将促进不同风力涡轮机之间的比较。这个新版本构成了一个技术修订版，引入了数据简化程序的新原则。

IEC 61400-11:2012(E) presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intended to facilitate characterisation of wind turbine noise with respect to a range of wind speeds and directions. Standardisation of measurement procedures will also facilitate comparisons between different wind turbines. This new edition constitutes a technical revision, introducing new principles for data reduction procedures.