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《Beijing Biomedical Engineering》 2004-02
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Time-Frequency Analysis of TEOAEs by STFT

DU Yu,NIE Kaibao,LIU Ju School of Information Science and Engineering, Shandong University, Jinan 250100  
TEOAEs are time varying sound signals. Their information could not be described enough by traditional Fourier transform. This paper introduces the method of analyzing TEOAEs by short time Fourier transform and gives the experiment results of time frequency distribution, then we analyze each frequency component. The start time,duration and frequency of stimulus artifact also have been described in this paper. It is been indicated that the stimulus artifact is apart from useful signal in time frequency domain, so it can be filtered by time frequency filter in theory.
【Fund】: 国家自然科学基金 ( 3 0 0 0 0 0 41);; 山东省自然科学基金(Y2 0 0 0G13 )资助
【CateGory Index】: R764
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