TIME-FREQUENCY ANALYSIS OF TRANSIENT EVOKED OTOACOUSTIC EMISSIONS VIA SMOOTHED PSEUDO WIGNER DISTRIBUTION

Transient evoked otoacoustic emissions (TEOAEs) can be processed by the smoothed pseudo Wigner distribution (SPWD). With this process, TEOAEs can be transformed into the time-frequency plane to give a three-dimensional pattern. The analyses of shape and localization of TEOAE patterns and the comparisons of pattern differences establish a method for describing otoacoustic emissions. A better understanding and interpretation of the characteristics of TEOAEs can be achieved as well. This method can be used as a powerful tool for monitoring the cochlear condition.