DIN - German Institute for Standardization

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

NF S30-007-7 ; NF EN ISO 389-7:2019-11-27
Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: reference threshold of hearing under free-field and diffuse-field listening conditions

Title (German)

Akustik - Standard-Bezugspegel für die Kalibrierung von audiometrischen Geräten - Teil 7: Bezugshörschwellen unter Freifeldund Diffusfeldbedingungen

Edition 2019-11-27

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 S30-007-7 ; NF EN ISO 389-7:2019-11-27 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: reference threshold of hearing under free-field and diffuse-field listening conditions

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NF S30-007-7 ; NF EN ISO 389-7:2019-11-27
Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: reference threshold of hearing under free-field and diffuse-field listening conditions