IEC 60268的这一部分适用于将电输入信号转换为信号的传感器 机械或声学输出信号。但是，如果电气输入端子和表面 如果可以接触到散热器，本文档也适用于被动和主动声音 扬声器、耳机、电视机、多媒体设备、个人便携设备等系统 音响设备、汽车音响系统和专业设备。这份文件 仅描述有助于评估转移行为的电气和机械测量 被测设备（DUT）的。这包括在小信号和大信号下操作DUT 域名。目标应用的声学边界条件的影响（例如。 在对音响系统进行物理评估时，也可以考虑车辆内部）。知觉 以及对再现声音和感知声音质量影响的认知评估 不在本文件的范围内。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 60268 applies to transducers converting an electrical input signal into a mechanical or acoustical output signal. However, if the electrical input terminals and the surface of the radiator are accessible, this document can also apply to passive and active sound systems such as loudspeakers, headphones, TV-sets, multi-media devices, personal portable audio devices, automotive sound systems and professional equipment. This document describes only electrical and mechanical measurements that help assess the transfer behaviour of the device under test (DUT). This includes operating the DUT in both the small- and large-signal domains. The influence of the target application's acoustical boundary conditions (e.g. car interior) can also be considered in the physical evaluation of the sound system. Perception and cognitive evaluations of the reproduced sound and the impact of perceived sound quality are outside the scope of this document.All current amendments available at time of purchase are included with the purchase of this document.