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目的在于使用指数分布方法计算来自于正常人耳短纯音诱发耳声发射（Ｔｏｎｅ－ｂｕｒｓｔＥｖｏｋｅｄＯｔｏａｃｏｕｓｔｉｃＥｍｉｓｓｉｏｎｓ，ＴＢＯＡＥｓ）的时频分布。对耳声发射的定量分析依赖于谱方法，而ＴＢＯＡＥｓ是非平稳信号，因此传统的谱分析方法已不能满足要求，指数分布能很好地给出ＴＢＯＡＥｓ的时频表示。我们根据对仿真信号及实测ＴＢＯＡＥｓ的计算结果，分析了其时频分布的特点，并对不同的频率成份与潜伏期的关系进行了描述。
The purpose is to use the exponential distribution method to calculate the time-frequency distribution of Tone-burst Evoked Otoacoustic Emissions (TBOAEs) from normal humans. The quantitative analysis of otoacoustic emission depends on the spectral method, and the TBOAEs are non-stationary signals. Therefore, the traditional spectral analysis methods can not meet the requirements. The exponential distribution gives a good time-frequency representation of TBOAEs. Based on the calculated results of simulated signals and measured TBOAEs, we analyze the characteristics of time-frequency distribution and describe the relationship between different frequency components and latency.