摘要
目的 :观察耳内式助听器在无输出的情况下 ,耳廓对耳内式助听器麦克风口的声学因素的影响。方法 :应用FONIX -6500-C真耳介入增益测试系统分别测试耳内式助听器全甲腔式(ITE)、耳道式(ITC)和深耳道式(CIC)麦克风口处常用位和可能用位的声增益、共振峰最高值及共振峰高峰值所处频率。结果 :ITE、ITC和CIC麦克风口声增益分别为5.94～6.46、6.90～9.25和8.82～9.15dB(SPL) ,3种款式耳内式助听器共振峰高峰值为17.71～23.00dB ,共振峰最高峰值所处频率为4733～5638Hz。结论 :耳内式助听器由于耳廓的影响 ,可增强助听器的助听效果 ,提高言语的可懂度和分辨率。
Objective:To observe the auricle's acoustic factors which infuence the microphone opening under the condition of hearing aids without output.Method:The acoustic gain,the maximum values of resonance peak(MVRP) and MVRP'S freqnencies of the microphone opening at usual or potential positons of in-the ear(ITE),in the -canal(ITC) and completely-in-the canal(CIC) hearing aids were tested by using the FONIX-6500-C real ear test system.Results: The values of acoustic gain of the microphone opening of ITE,ITC and CIC were 5.94～6.46 dB(SPL),6.90～9.25 dB(SPL)and 8.82～9.15 dB(SPL) respectively,the maximum values of resonance peak of those three kinds of hearing aids were 17.71～23.00 dB;MVRP'S freqencies were 4 733～5 638 Hz.Condusion:Because of aurical's influences,hearing aids could improve its effects and increase speech understanding and discrimination.
出处
《现代康复》
CSCD
2000年第3期372-373,共2页
Modern Rehabilitation
