摘要
介绍了耳声发射的产生机理和分类，论述了短声诱发耳声发射（ＣＥＯＡＥｓ）的实验及其提取方法．在锥形核时频分布方法的基础上，利用计算机及相应分析软件计算了来自具有正常听力人左右耳ＣＥＯＡＥｓ 的时频分布．根据试验和计算结果，讨论和分析了它们的时频分布特点及其相互关系，得出了对同一个具有正常听力人左右耳ＣＥＯＡＥｓ 的波形、主要发射频率的数目及持续时间具有相似性等结论．
This paper introduced the generation mechanism of otoacoustic emissions and their classification, and mainly mentioned the testing and extracting method of the click evoked otoacoustic emissions (CEOAEs). Based on the cone shaped kernel distribution, the time frequency distributions of CEOAEs from normal right and left ears were calculated by means of personal computer and the corresponding analysis software. From these results, it analyzed the characteristics of the time frequency distributions of normal right and left ears and correlation. And finally concluded that the two ears of a single subject with normal hearing tend to show similar CEOAEs with respect to waveform, number of dominant emission frequencies, duration.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2000年第2期229-232,共4页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金!(69771006)
关键词
耳声发射
信号处理
时频分析
生理声信号
CEOAEs
otoacoustic emissions
signal processing
time frequency representation
physiological acoustic signals
