标准摘要
[中文适用范围]： 处理四级精度的声级计，指定类型 0、1、2 和 3。指定以下特性：方向特性、频率计权特性、时间计权、探测器和指示器特性、对各种环境的灵敏度。建立电气和声学测试以验证是否符合指定的特性，并描述绝对灵敏度校准的方法。该标准取代 IEC 60123 和 IEC 60179。 [外文原描述]： Deals with sound level meters of four degrees of precision, designated Types 0, 1, 2 and 3. Specifies the following characteristics: directional characteristics, frequency weighting characteristics, time-weighting, detector and indicator characteristics, sensitivity to various environments. Establishes electrical and acoustical tests to verify compliance with characteristics specified and describes the method for absolute sensitivity calibration. This standard supersedes IEC 60123 and IEC 60179.
英文名称Sound level meters