Skip to main content

Analysis of click-evoked otoacoustic emissions by concentration of frequency and time: Preliminary results from normal hearing and Ménière's disease ears

Publication ,  Conference
Liu, TC; Wu, HT; Chen, YH; Fang, TY; Wang, PC; Liu, YW
Published in: AIP Conference Proceedings
May 31, 2018

The presence of click-evoked (CE) otoacoustic emissions (OAEs) has been clinically accepted as an indicator of normal cochlear processing of sounds. For treatment and diagnostic purposes, however, clinicians do not typically pay attention to the detailed spectrum and waveform of CEOAEs. A possible reason is due to the lack of noise-robust signal processing tools to estimate physiologically meaningful time-frequency properties of CEOAEs, such as the latency of spectral components. In this on-going study, we applied a modern tool called concentration of frequency and time (ConceFT, [1]) to analyze CEOAE waveforms. Randomly combined orthogonal functions are used as windowing functions for time-frequency analysis. The resulting spectrograms are subject to nonlinear time-frequency reassignment so as to enhance the concentration of time-varying sinusoidal components. The results after reassignment could be further averaged across the random choice of windows. CEOAE waveforms are acquired by a linear averaging paradigm, and longitudinal data are currently being collected from patients with Ménière's disease (MD) and a control group of normal hearing subjects. When CEOAE is present, the ConceFT plots show traces of decreasing but fluctuating instantaneous frequency against time. For comparison purposes, same processing methods are also applied to analyze CEOAE data from cochlear mechanics simulation.

Duke Scholars

Published In

AIP Conference Proceedings

DOI

EISSN

1551-7616

ISSN

0094-243X

ISBN

9780735416703

Publication Date

May 31, 2018

Volume

1965
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Liu, T. C., Wu, H. T., Chen, Y. H., Fang, T. Y., Wang, P. C., & Liu, Y. W. (2018). Analysis of click-evoked otoacoustic emissions by concentration of frequency and time: Preliminary results from normal hearing and Ménière's disease ears. In AIP Conference Proceedings (Vol. 1965). https://doi.org/10.1063/1.5038538
Liu, T. C., H. T. Wu, Y. H. Chen, T. Y. Fang, P. C. Wang, and Y. W. Liu. “Analysis of click-evoked otoacoustic emissions by concentration of frequency and time: Preliminary results from normal hearing and Ménière's disease ears.” In AIP Conference Proceedings, Vol. 1965, 2018. https://doi.org/10.1063/1.5038538.

Published In

AIP Conference Proceedings

DOI

EISSN

1551-7616

ISSN

0094-243X

ISBN

9780735416703

Publication Date

May 31, 2018

Volume

1965