EN 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 (ISO 389-7:2019)
出版：Comite Europeen de Normalisation
专家解读视频
基本信息
标准编号： EN ISO 389-7:2019
标准类别：Standard
出版单位：Comite Europeen de Normalisation
标准页数：0
标准简介
This document specifies a reference threshold of hearing for the calibration of audiometric equipment used under the following conditions. a) The sound field in the absence of the listener consists of either a free progressive plane wave (free field) or a diffuse sound field, as specified in ISO 8253?2.
