Specification for electroacoustics. Instruments for the measurement of sound intensity. Measurement with pairs of pressure sensing microphones
电声学规范 测量声音强度的仪器 使用双压力感应麦克风进行测量
Ensures well defined performance for instruments used for the determination of sound power according to ISO 9614-1.Cross References:BS 2475BS 5969BS 7189BS 7703:Part 1IEC 1260