Standard No.:	GB/T 25102.8-2017
English Name:	Electroacoustics-Hearing aids-Part 8:Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
Chinese Name:	电声学 助听器 第8部分：模拟实际工作条件下的助听器性能测量方法
Chinese Classification:	M72    Sound and electronic sound equipment
Professional Classification:	GB    National Standard
ICS Classification:	17.140.50 17.140.50    Electroacoustics 17.140.50
Source Content Issued by:	AQSIQ; SAC
Issued on:	2017-11-01
Implemented on:	2018-5-1
Status:	valid
Superseding:	GB 11453-1989 Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
Target Language:	English
File Format:	PDF
Word Count:	12500 words
Translation Price(USD):	370.0
Delivery:	via email in 1~3 business day

本部分规定了模拟成人佩戴者对助听器性能的声学影响的测量方法。
　　本部分适用于建立模拟实际工作条件下的助听器性能测量，提出了一种模拟实际条件下助听器性能测量的简化方法，并给出了助听器中指向性传声器在水平方向的指向性指数（DI）的确定方法。
　　另外，本部分规定了允差。只有当测试实验室实际测量结果包括扩展不确定度后，完全落在根据本部分规定的Umax值扩展的允差内，才能证明符合本部分规定。