Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
基本信息
标准号:
GB/T 4854.1-1999
名称:
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
英文名称:
Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones