The Subcommittee covers the following topics

• Primary and secondary calibration of microphones
• Secondary calibration of acoustic calibrators and sound measurement instrumentation
• Metrology for instrumentation for hearing assessment
• Research in direct (non-microphone-based) methods for providing primary acoustic references
• Research underpinning European and International metrology and standardisation in the field of the subcommittee
• Coordination of and exchange of information on standardisation and research in the field of the subcommittee