Wavelet analysis of TEOAE simulated by a homomorphic auditory model

Otoacoustic Emissions (OAE) detected in the ear canal are acoustic waves produced by the cochlea. In this paper, Continuous Wavelet Transform (CWT) is adapted to analyze Transient Evoked Otoacoustic Emission (TEOAE), one of the important kinds of OAE. The TEOAE signal is simulated by an homomorphic auditory model, in which controlled voltage sources are regarded as the generation sources of OAE. In order to get more information about TEOAE from its wavelet analyzed result, the scale number and the mother wavelet are chosen based on this model. In this paper, special attention is also paid to the localization of the abnormal regions in the cochlea. The results given in the paper show that the abnormal regions can be located from the wavelet analyzed result.