DIN EN ISO 389-7:2020-06 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019); German version EN ISO 389-7:2019

标准编号：DIN EN ISO 389-7:2020-06

英文标题：Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019); German version EN ISO 389-7:2019

德文标题：Akustik - Standard-Bezugspegel für die Kalibrierung von audiometrischen Geräten - Teil 7: Bezugshörschwellen unter Freifeld- und Diffusbedingungen (ISO 389-7:2019); Deutsche Fassung EN ISO 389-7:2019

发布日期：2020-06

DIN EN ISO 389-7:2020-06 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019); German version EN ISO 389-7:2019

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