IEC 61094-2:20 09适用于符合IEC 61094-1要求的实验室标准麦克风和具有相同机械尺寸的其他类型的电容麦克风，并规定了确定复数压力灵敏度的主要方法，以便为声压测量建立可再现和准确的基础。这第二版取消并取代了1992年出版的第一版。这第二版构成技术修订。与上一版相比，此版本包括以下重大技术变更: -更新第6条以满足ISO/IEC指南98-3的要求； -附录A中热传导理论的改进； -修订附件F:湿空气的物理性质。

IEC 61094-2:2009 is applicable to laboratory standard microphones meeting the requirements of IEC 61094-1 and other types of condenser microphone having the same mechanical dimensions and specifies a primary method of determining the complex pressure sensitivity so as to establish a reproducible and accurate basis for the measurement of sound pressure. This second edition cancels and replaces the first edition published in 1992. This second edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- an update of Clause 6 to fulfil the requirements of ISO/IEC Guide 98-3;
- an improvement of the heat conduction theory in Annex A;
- a revision of Annex F: Physical properties of humid air.