本标准描述了声音评估的基本量和一般程序 尊重社区反应。研究人们和社区受到影响的方式 环境中常见的日常噪音导致了各种评估噪音的措施 不同类型的噪音。各种各样的措施让人们对这种关系产生了一些困惑 在这些措施中，包括针对特定目的的适用性。本标准定义了一致性 可用于测量和评估环境声音的物理量测量。本标准采用时间平均A加权声级作为所有社区的基本声级 除了高能脉冲声。C加权声暴露水平用于描述 高能脉冲声音，如爆炸声或音爆，可用于描述其他低频声音 声源，如工业过程、运输源和电力 发电设施。附件提供了一些基本数量的信息，这些基本数量 用来描述某些环境声音。

This standard describes basic quantities and general procedures for assessment of sound with respect to community response. Research on the ways in which people and communities are affected by common everyday noises in the environment has led to a variety of measures for assessment of different types of noise. The variety of measures has introduced some confusion about the relationship among the measures and their applicability for specific purposes. This standard defines consistent measures for physical quantities that may be used to measure and assess environmental sound.Time-average A-weighted sound level is adopted in this standard as a basic quantity for all community sound except high-energy impulsive sound. A C-weighted sound exposure level is used to describe high-energy impulsive sounds such as blasts or sonic boom, and it may be used to describe other lowfrequency sound sources such as industrial processes, transportation sources and electric power generating facilities. The Annex provides information concerning some of the basic quantities that have been used to describe certain environmental sounds.