Home / Standards / GB/T 42553-2023 GB/T 42553-2023 Active Electroacoustics—Methods to determine corrections to obtain the free-field response of a sound level meter 电声学 确定声级计自由场响应修正值的方法 Standard Type GBT ICS 17.140.50 CCS A59 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A