National Physical Laboratory

Audiometric Calibration and Standards: Instrumentation

This section covers acoustical equipment which may be used for audiometric calibration or associated audiometric measurement.
International Standards National Standards
IEC 60942:2003 Electroacoustics - Sound calibrators BS EN 60942:2003 Electroacoustics - Sound calibrators
IEC 61012:1990 Filters for the measurement of audible sound in the presence of ultrasound BS EN 61012:1998 Filters for the measurement of audible sound in the presence of ultrasound
IEC 61094-1:2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones BS EN 61094-1:2001 Specification for measurement microphones. Specifications for laboratory standard microphones
IEC 61094-2:2009 Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique BS EN 61094-2:2009 Specification for measurement microphones. Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
IEC 61094-3:1995 Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique BS EN 61094-3:1996 Specification for measurement microphones. Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones BS EN 61094-4:1996 Specification for measurement microphones. Specifications for working standard microphones
IEC 61094-5:2001 Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison BS EN 61094-5:2002 Measurement microphones. Methods for pressure calibration of working standard microphones by comparison
IEC/TS 61094-7:2006 Measurement microphones - Part 7: Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones DD IEC/TS 61094-7:2006 Measurement microphones. Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones
IEC 61183:1994 Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters BS EN 61183:1995 Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters (with amendment 1:2001) BS EN 61260:1996 Electroacoustics - Octave-band and fractional-octave-band filters
IEC 61672-1:2002 Electroacoustics - Sound level meters - Part 1: Specifications BS EN 61672-1:2003 Electroacoustics - Sound level meters. Specifications
IEC 61672-2:2003 Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests BS EN 61672-2:2003 Electroacoustics - Sound level meters. Pattern evaluation tests


BSI/ISO/IEC websites

For the most up-to-date information regarding current audiometric standards, as well as pricing and ordering details on all the standards listed here, please contact the relevant standards organisation:

Members of the BSA (British Society of Audiology) can register for the BSA Standards Forum (hosted by NPL), which allows members to view and comment on standards which are currently in development or under revision.

NPL also offers audiometric calibration services, as well as training courses on all aspects of audiometry.

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Last Updated: 20 Jul 2010
Created: 20 Jul 2010