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Standard Insuued on: 1999-03

GB/T 4854.1-1999    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 校准测听设备的基准零级 第1部分:压耳式耳机纯音基准等效阈声压级
Category No.:GB Valid Status:superseded
Issued Organization: Issued Date:1999-03-08
Implemented Date:1999-9-1 Abolished Date:2004-12-01
Superseded Standard.:GB/T 4854.1-2004 Acoustics?Reference zero for the calibration of audiometric equipment?Part 1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
Superseded Date:2004-12-1
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QC/T 454-1999   QC/T 466-1999   DB50/T 23-1999   FZ/T 95013-1999   DB37/ 265-1999   QC/T 461-1999   FZ/T 90104-1999   GB 50096-1999   GB/T 17695-1999   GB/T 17693.1-2008   TB 10219-1999   SL 234-1999   GB 4343.2-1999   GB 17691-1999   GB 14761-1999   GB 3847-1999   GB 17681-1999   GB/T 24040-1999   GB/T 17711-1999   SY/T 6358-1998  

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