GB/T 18698-2002 in English

《GB/T 18698-2002声学 信息技术设备和通信设备噪声发射值的标示》由TC17（全国声学标准化技术委员会）归口，主管部门为中国科学院。
信息技术设备和通信设备的用户、设计者、制造商和管理部门、对设备的噪声发射值都有要求。这种参数适用于不同产品的噪声发射比较和系统安装的声学设计，并与工作位置噪声暴露级的评价有关。

Scope

This standard applies to information technology equipment and communication equipment. This standard stipulates: ----the method for determining the labeled value of noise emission; ----the acoustic and product information that the manufacturer shall provide to the user in the technical documents; ----the specification of the labeled value of noise emission provided by the manufacturer Testing method. This standard adopts the unified method stipulated in GB/T 18313, GB/T 14574 and GB/T 14573 to obtain noise data. The basic marked value of noise emission is the marked value Lwad of the A-weighted sound power level (corresponding to the maximum statistical value of Lc specified in GB/T 14573) and the marked value of the A-weighted sound pressure pole at the operator's position or the position of the personnel present Lpam (average). The indicated value Lwad of the A-weighted sound power level can be used to compare the noise emission of different products, and to estimate the noise exposure level of the system device or the working position. To calculate the exposure level of a single or multiple sound sources, although the most useful quantity is the marked value Lwad of the A-weighted sound power level of a single sound source, the marked value Lpam of the A-weighted sound pressure pole can also be used to estimate the closest Exposure levels for areas adjacent to detached parts of the equipment.