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本文利用两类不同基本小波对仿真诱发耳声发射信号进行分析 ,比较两类小波的时间尺度分辨率 ,进而研究瞬态诱发耳声发射信号潜伏期与不同尺度下频率成份之间的关系。研究结果表明 :Proposed小波在 n=2的情况下 ,其时间尺度分辨率明显优于其它小波 ,用该小波分析仿真诱发耳声发射信号 ,得出了潜伏期与尺度之间的关系。仿真诱发耳声发射信号潜伏期与其小波变换不同尺度之间基本呈线性关系 ,所以对诱发耳声发射信号进行小波分析 ,可能会为临床提供很有价值的诊断信息。
In this paper, two types of basic wavelets are used to analyze the simulated otoacoustic emissions signals. The time-scale resolution of the two types of wavelets is compared, and the relationship between the latency of transient-induced otoacoustic emissions and the frequency components at different scales is studied. The results show that the resolution of Proposed wavelet is obviously better than that of other wavelet in the case of n = 2, and the relationship between the latency and the scale is obtained by using the wavelet analysis to simulate the induced otoacoustic emissions. The latency of simulated evoked otoacoustic emissions is basically linear with different scales of wavelet transform. Therefore, wavelet analysis of induced otoacoustic emissions may provide valuable clinical diagnostic information.