A novel real-time noise reduction system for the assessment of evoked otoacoustic emissions

被引：7
|
作者：
Kompis, M [1 ]
Oberli, M
Brugger, U
机构：
[1] Inselspital Bern, Univ Clin ENT Head & Neck Surg, CH-3010 Bern, Switzerland
[2] Sch Engn, Signal Proc Lab, CH-3400 Burgdorf, Switzerland
来源：
COMPUTERS IN BIOLOGY AND MEDICINE | 2000年 / 30卷 / 06期
关键词：
adaptive noise cancellation; digital signal processing; hearing disorders; noise reduction; otoacoustic emissions; real-time signal processing;
D O I：
10.1016/S0010-4825(00)00018-4
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A novel noise reduction method and apparatus to be used in connection with the measurement of evoked otoacoustic emissions (EOAE) are presented. The noise reduction method is based on an adaptive noise canceller and requires a noise-only reference microphone placed in the vicinity of the OAE-probe. The method was implemented in real time on a custom built digital signal processing system using an Analog Devices ADSP-2181 digital signal processor. The system interfaces seamlessly with a commercial EOAE acquisition system. Results of a series of experiments show than noise reductions of 7-8 dB can be reached. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：341 / 354
页数：14
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