ISO 389-7:2019现行
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
出版：International Organization for Standardization
专家解读视频
This document specifies a reference threshold of hearing for the calibration of audiometric equipment used under the following conditions.
DS/EN ISO 389-7:2019 - Identical
DS/ISO 389-7:2019 - Identical
EN ISO 389-7:2019 - Identical
SS-EN ISO 389-7:2019 - Identical
EN ISO 389-7:2019 - Identical
DS/ISO 389-7:2019 - Identical
DS/EN ISO 389-7:2019 - Identical
