Time frequency analysis for transient evoked otoacoustic emissions in different time windows.
Transient evoked otoacoustic emissions (TEOAEs) are widely applied in the field of early identification of hearing loss and consequent diagnosis. The duration of testing will not only determine the speed directly but also influence the quality indirectly. In this paper, the default 20ms TEOAEs were divided averagely into 16 continuous 1.25ms-long sub-windows and cross correlation coefficient in each subsection was calculated and compared. Then time-frequency analysis of cone-shaped kernel was applied to demonstrate the frequency changes when TEOAEs were processed under different time windows. It is shown that even if the window was reduced to 12.5 ms, high and middle frequency components were hardly affected while the low frequency component was partially impaired.
Yang
Qian
Q
Dept. of Biomed. Eng., Shanghai Jiao Tong Univ.
Chai
Xinyu
X