BS EN ISO 389-4-1999
Acoustics. Reference zero for the calibration of audiometric equipment-Reference levels for narrow-band masking noise
声学校准测听设备的参考零点
1999-07-15
BS EN ISO 389-6-2007
Acoustics. Reference zero for the calibration of audiometric equipment-Reference threshold of hearing for test signals of short duration
声学校准测听设备的参考零点
2007-08-31
BS EN ISO 389-9-2009
Acoustics. Reference zero for the calibration of audiometric equipment-Preferred test conditions for the determination of reference hearing threshold levels
声学校准测听设备的参考零点
2010-02-28
KS I ISO 389-4
음향 — 청력측정설비 교정용 영점 기준 —제4부: 협대역 마스킹 잡음레벨 기준
声学 - 参考零用于测量设备的校准 - 第4部分:窄带屏蔽噪声的参考电平
2020-12-29
GB/T 4854.4-1999
声学 校准测听设备的基准零级 第4部分:窄带掩蔽噪声的基准级
Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise
1999-03-08
ISO 389-4-1994
Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise
声学——测听设备校准用参考零点第4部分:窄带掩蔽噪声参考电平
1994-09-22
ISO 389-6-2007
Acoustics — Reference zero for the calibration of audiometric equipment — Part 6: Reference threshold of hearing for test signals of short duration
声学——测听设备校准用参考零点第6部分:短时测试信号的参考听阈
2007-07-02
BS EN ISO 389-3-2016
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
声学校准测听设备的参考零点
2016-02-29
BS EN ISO 389-8-2004
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
声学校准测听设备的参考零点
2004-06-08
BS EN ISO 389-2-1997
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold sound pressure levels for pure tones and insert earphones
声学校准测听设备的参考零点 纯音和插入式耳机的参考等效阈值声压级
1995-03-15
BS EN ISO 389-7-2019
Acoustics. Reference zero for the calibration of audiometric equipment-Reference threshold of hearing under free-field and diffuse-field listening conditions
声学校准测听设备的参考零点
2019-12-06
GB/T 4854.6-2014
声学 校准测听设备的基准零级 第6部分：短时程测试信号的基准听阈
Acoustics―Reference zero for the calibration of audiometric equipment―Part 6: Reference hearing threshold levels for test signals of short duration
2014-09-03
GB/T 4854.9-2016
声学 校准测听设备的基准零级 第9部分：确定基准听阈级的优选测试条件
Acoustics—Reference zero for the calibration of audiometric equipment—Part 9: Preferred test conditions for the determination of reference hearing threshold levels
2016-02-24
ISO 389-9-2009
Acoustics — Reference zero for the calibration of audiometric equipment — Part 9: Preferred test conditions for the determination of reference hearing threshold levels
声学——测听设备校准用参考零点第9部分:确定参考听阈水平的优选试验条件
2009-05-07
BS EN ISO 389-1-2018
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
声学校准测听设备的参考零点
2018-03-02
UNE-EN ISO 389-4-1999
ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)
声学校准测听设备的参考零点 第4部分:窄带掩蔽噪声的参考水平（ISO 389-4-1994）
1999-11-18
AS ISO 389.7-2003[ Obsolescent ]
Acoustics - Reference zero for the calibration of audiometric equipment, Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
声学.听力测量设备校准用参考零点.自由场和漫射场听力条件下的参考听阈
2003-01-01
AS/NZS ISO 389.3-2019
Acoustics - Reference zero for the calibration of audiometric equipment, Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
声学.测听设备校准用参考零点.第3部分:纯音和骨振动器的参考等效阈值振动力水平
2019-02-25
KS I ISO 389-2
음향 — 청력측정설비 교정용 영점 기준 —제2부: 꽂는형 이어폰에 대한 순음 기준등가역치음압레벨
声学 - 用于校准听力测量设备的参考零点 - 第2部分:参考等效阈值声压纯音和插入式耳机的音高
2020-12-29
KS I ISO 389-3
음향 — 청력측정설비 교정용 영점 기준 —제3부: 골 진동기에 대한 순음 기준등가역치진동레벨
声学 - 参考零用于校准测量设备 - 第3部分:参考等效阈值纯音和骨振动器的振动力等级
2020-12-29