CEI EN 61094-2 : 2014

1 Scope
2 Normative references
3 Terms and definitions
4 Reference environmental conditions
5 Principles of pressure calibration
  by reciprocity
6 Factors influencing the pressure
  sensitivity of microphones
7 Calibration uncertainty components
Annex A (normative) - Heat conduction
        and viscous losses in a closed
        cavity
Annex B (normative) - Acoustic impedance
        of a capillary tube
Annex C (informative) - Examples of
        cylindrical couplers for
        calibration of microphones
Annex D (informative) - Environmental
        influence on the sensitivity of
        microphones
Annex E (informative) - Methods for
        determining microphone parameters
Annex F (informative) - Physical properties
        of humid air
Annex ZA (normative) - Normative references
         to international publications with
         their corresponding European
         publications

Pertains to laboratory standard microphones meeting the requirements of IEC 61094-1 and other types of condenser microphone having the same mechanical dimensions; specifies a primary method of determining the complex pressure sensitivity so as to establish a reproducible and accurate basis for the measurement of sound pressure.