标准号:KS I ISO 389-7-2014
英文标准名称:Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under freefield and diffuse-field listening conditions
发布日期:2014/12/31 12:00:00
实施日期:2014/12/31 12:00:00
国际标准分类号:13.140