This standard specifies mechanical dimensions and certain electroacoustic characteristics for condenser microphones used as laboratory standards for the realization of the unit of sound pressure and for sound pressure measurements of the highest attainable accuracy. The specifications are intended to ensure that primary calibration by the reciprocity method can be readily carried out.
DS/EN 61094-1:2001 history
2001DS/EN 61094-1:2001 Measurement microphones - Part 1: Specifications for laboratory standard microphones