GB/T 4854.8-2007
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 4854.8-2007
Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones 声学 校准测听设备的基准零级 第8部分:耳罩式耳机纯音基准等效阈声压级
Issued Date:2007-11-14
Implemented Date:2008-05-01
Issued by:
The Standardization Administration of the People's Republic of China