Clinical Application of Different Feedback Cancellation Technologies in Hearing Aids Open Fitting
- VernacularTitle:反馈截除技术在开放式助听器选配中的应用
- Author:
Zhihong CHANG
;
Fei REN
;
Xuenian CHEN
;
Mei WU
;
Yanqing LU
;
Xiaoyu HU
- Publication Type:Journal Article
- Keywords:
PureWave feedback eliminator;
Active feedback intercept;
Added stable gain;
Maximum stable gain;
Open fitting
- From:
Journal of Audiology and Speech Pathology
1997;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To validate the clinical effects of two feedback cancellation technologies, PureWave Feedback Eliminator and Active Feedback Intercept based on different platform, in hearing aids open fitting.Methods 40 patients(40 ears) were selected randomly to use the different products(RIC and ZON),which represent the different technologies(PureWave Feedback Eliminator and Active Feedback Intercept respectively), for testing ASG and MSG in the same condition of ear canal .Same receivers (50 dB) were placed in ear canals with medium earbud. Patients aged from 16 to 70 years old, mean age was 40?18.04,and the average PTA was 55.7?14.8 dB HL.Results ASG testing results under two technologies were different. ASG under PureWave Feedback Eliminator was 25.12 dB and that of AFI was 20.33 dB. Maximum difference of MSG gained from the two technologies at 3 kHz and 6.5 kHz were 8 dB and 6 dB,respectively.Conclusion PureWave Feedback Eliminator technology maintains a clear lead of ASG in hearing aids open fitting model, which is helpful for increasing fitting ranges for open fitting and improving comfort and cosmetic.
