Acoustical standards calibration at the physics division of the National Research Council of Canada

G.S.K. Wong, T.F.W. Embleton


Describes some recent research and development in acoustical standards calibration at NRC. Topics included are: instrumentation and apparatus for precise reciprocity and comparison methods of calibration of condenser microphones. Also, a three-port two microphone cavity technique for the overall calibration of sound level meters is discussed together with various methods of verification of acoustical calibrators


acoustic devices; acoustic variables measurement; calibration; microphones; standards; acoustical standards; instrumentation; apparatus; condenser microphones; microphone cavity

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