IEC 61094-8:2012适用于符合IEC 61094-4要求的工作标准话筒。它描述了通过与实验室标准传声器或工作标准传声器（如适用）进行比较来确定自由场灵敏度的方法，该传声器已根据以下任一标准进行校准:；IEC 61094-3；IEC 61094-2；IEC 61094-5；IEC 61094-6；或IEC 61094的这一部分。IEC 61094本部分涵盖了在理想自由场（例如，高质量自由场室）良好近似的声学环境中执行的方法，以及使用结果后处理来最小化声学环境中缺陷的影响，以模拟自由场条件的方法。基于IEC 61094所述原理的比较方法- 3也有可能，但超出了IEC 61094本部分的范围。

IEC 61094-8:2012 applicable to working standard microphones meeting the requirements of IEC 61094-4. It describes methods of determining the free-field sensitivity by comparison with a laboratory standard microphone or working standard microphone (where applicable) that has been calibrated according to either; IEC 61094-3; IEC 61094-2; IEC 61094-5; IEC 61094-6; or this part of IEC 61094. Methods performed in an acoustical environment that is a good approximation to an ideal free-field (e.g. a high quality free-field chamber), and methods that use post processing of results to minimise the effect of imperfections in the acoustical environment, to simulate free-field conditions, are both covered by this part of IEC 61094. Comparison methods based on the principles described in IEC 61094-3 are also possible but beyond the scope of this part of IEC 61094.