Abstract
The study presents the investigation results of synchronous averaging method and its application in estimation of impulse evoked otoacoustic emission signals (IEOAE). The method was analyzed using synthetic and real signals. Synthetic signals were modeled as the mixtures of deterministic component with noise realizations. Two types of noise were used: normal (Gaussian) and transient impulses dominated (Laplacian). Signal to noise ratio was used as the signal quality measure after processing. In order to account varying amplitude of deterministic component in the realizations weighted averaging method was investigated. Results show that the performance of synchronous averaging method is very similar in case of both types of noise Gaussian and Laplacian. Weighted averaging method helps to cope with varying deterministic component or noise level in case of nonhomogenous ensembles as is the case in IEOAE signal.
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