GB/T 25102.7-2017: Electroacoustics -- Hearing aids -- Part 7: Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes

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Scope

This Part of GB/T 25102 gives recommendations for the measurement of the performance
characteristics of hearing aids of a particular model for production, supply and delivery quality
assurance purposes. The manufacturer will normally assign nominal values. Only when the
result of a measurement, extended by the actual expanded uncertainty of measurement of the
testing laboratory, lies fully within the tolerances specified in this Part, it can be proved that is
consistent with this Part. Table 4 gives extended values for Umax.
This Part is applicable to the specific type of air-conduction hearing aids.
This Part does not relate to mechanical or environmental tests. It should not be used as the basis
for the exchange of information about hearing aid characteristics in general, nor is it intended
to be used as a predictor for real-ear performance.
NOTE: Terms such as "manufacturer" and "purchaser" are used in this Part. These terms may be
understood, however, to refer to the supplier and recipient respectively in any arrangement for the supply
of hearing aids in which the use of this Part is called for.
Though the number of measurements covered by this Part is limited, it is not intended that all
measurements described herein shall be made in every case.
In case of custom-made in-the-ear instruments, the data supplied by the manufacturer applies
only to the particular hearing aid being tested.

Basic Data

Standard ID	GB/T 25102.7-2017 (GB/T25102.7-2017)
Description (Translated English)	Electroacoustics -- Hearing aids -- Part 7: Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	M72
Word Count Estimation	17,138
Date of Issue	2017-09-07
Date of Implementation	2018-04-01
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China