模拟工作环境条件下助听器检测系统设计与实现

助听器作为一种特殊放大器帮助听力损失者,其质量对听力损失者的身心健康影响很大。依据国际标准IEC60118—0,助听器的一些基本参数已经可以测量。由于考虑佩戴者对助听器接收声信号的影响,设计一套自动测量系统测量模拟工作条件下助听器的特性。主要对参数——满档插入增益和指向性特性进行测量。该系统可以自动获取并记录测量数据。实验结果表明该系统可以满足测量模拟工作条件下助听器的特性。

The Inspection System for Hearing Aids in Situ Working Condition

Hearing aid is a special amplifier to help the hearing disabled. The quality of hearing aids is important for the disabled physical and mental health. According to the international standard IEC 60118-0, some general parameters of the hearing aid have been measured to evaluate the quality. Because of taking into account the acoustical influence of the wearer on the performance of hearing aids, this paper establishes a system which is on the basis of the standard IEC 60118-8 to automatically measure the performance characteristics of hearing aids under simulated in situ working condition. There are some parameters that are considered important for the evaluation of the performance of hearing aids as normally worn, such as full-on insertion gain, insertion frequency response and directional characteristics. This paper describes the methods to measure these parameters and establishes a platform to inspect them. Meanwhile, the inspection data can be processed and recorded automatically. A hearing aid is selected to do the experiments. The experiment results show that the system can be competent for inspection the performance of hearing aids in situ working condition.