IEC 61094-1 pdf download

IEC 61094-1 pdf download.Measurement microphones 1 Scope This part of IEC 61 094 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...