Synthesis and decomposition of transient-evoked otoacoustic emissions based on an active auditory model

In this paper, transient-evoked otoacoustic emissions (TEOAE's) are synthes ized by an active auditory model, and decomposed by continuous wavelet tran sform (CWT) to study the frequency-latency relationship and the generation of TEOAE signals. The controlled voltage sources that relate to the mobile mechanism of the outer hair cells (OHC's) are proposed to serve as the gene ration sources of TEOAE signals, The state-variable method is adopted to ca lculate the auditory model. The mother wavelet used in CWT is selected on b asis of the model, The results of this study show that the simulated TEOAE signal is similar to the clinically detected ones not only in the time-doma in waveform, but also in the frequency-latency relationship. It seems to be clear that the generation of TEOAE signals is related to the same active m echanism as the cochlear sharp frequency selectivity.