00831nam a22000977a 4500245010900000250000800109260006400117300001000181505052600191650001600717  aIEC 61094-1:2000-Measurement microphones - Part 1 : bSpecifications for laboratory standard microphones  a2.0  aGeneva :bInternational Electrotechnical Commission,c2000.  a36 p.  aSpecifies 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. Establishes a system for classifying laboratory standard condenser microphones into a number of types according to their dimensions and properties.  aMicrophones