GB/T 25102.8-2017 Active
GB/T 25102.8-2017 Electroacoustics—Hearing aids—Part 8:Methods of measurement of performance characteristicsof hearing aids under simulated in situ working conditions
Abstract
This part of GB/T 25102 specifies the measurement method for simulating the acoustic impact of adult wearers on the performance of hearing aids. This part is applicable to establishing the performance measurement of hearing aids under simulated actual working conditions, proposes a simplified method for measuring the performance of hearing aids under simulated actual conditions, and provides a method for determining the directivity index (DI) of directional microphones in hearing aids in the horizontal direction. In addition, this part specifies the allowable deviations. Only when the actual measurement results of the test laboratory include the expanded uncertainty and completely fall within the allowable deviations extended according to the Umax value specified in this part, can it be proved that it complies with the provisions of this part.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 25102.8-2017 |
| CCS | Audio equipment, electroacoustic devices |
| ICS | Electroacoustics |
| Implement Date | 2018-05-01 |