Acoustics - Reference zero for the calibration of audiometric equipment, Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
声学.测听设备校准用参考零点 第1部分:纯音和超听觉耳机的参考等效阈值声压级
2019-02-25
KS I ISO 389-1
음향 — 청력측정설비 교정용 영점 기준 —제1부: 얹는형 이어폰에 대한 순음 기준등가역치음압레벨
声学 - 用于校准听力设备的参考零点 - 第1部分:纯音和超音响耳机的参考等效阈值声压级
2020-12-29
ISO 389-1-2017
Acoustics — Reference zero for the calibration of audiometric equipment — Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
声学 - 用于校准听力设备的参考零点 - 第1部分:纯音和超音响耳机的参考等效阈值声压级
2017-12-13
UNE-EN ISO 389-1-2001
Acoustics. Reference zero for the calibration of audiometric equipment. Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones. (ISO 389-1:1998)
声学校准测听设备的参考零点 第1部分:纯音和超听觉耳机的参考等效阈值声压级 (ISO 389-1-1998)