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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

NF S30-007-8 ; NF EN ISO 389-8:2004-10-01
Acoustics - reference zero for the calibration of audiometric equipment - Part 8: reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

Title (German)

Akustik - Bezugpegel für die Audiometrie - Teil 8: Bezugs-Schwellen-Schalldruckpegel für Reintöne und circumaurale Kopfhörer

Edition 2004-10-01

Original language French

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

NF S30-007-8 ; NF EN ISO 389-8:2004-10-01 Acoustics - reference zero for the calibration of audiometric equipment - Part 8: reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

Want to learn more?

NF S30-007-8 ; NF EN ISO 389-8:2004-10-01
Acoustics - reference zero for the calibration of audiometric equipment - Part 8: reference equivalent threshold sound pressure levels for pure tones and circumaural earphones