Standard No.:	GB/T 4854.8-2007
English Name:	Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones
Chinese Name:	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
Chinese Classification:	A59    Acoustic Measurement
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2007-11-14
Implemented on:	2008-5-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	130.00
Delivery:	via email in 1~3 business day

本部分规定了125Hz～8 000Hz频率范围的纯音基准等效阈声压级（RETSPLs），适用于配备了一种特殊型号的耳罩式耳机（SENNHEISER HDA 200）的气导测听设备的校准。