DIN EN 61094-3-1996 测量传声器.第3部分:用互易技术对实验室标准传声器进行校准的基本方法
Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique (IEC 61094-3:1995); German version EN 61094-3:1995
The document is applicable to laboratory standard microphones meeting the requirements of IEC 1094-1. It specifies a primary method of determining the free-field sensitivity so as to establish a reproducible and accurate basis for the measurement of sound pressure under free-field conditions. It is intended for use by laboratories with highly experienced staff and specialized equipment.