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Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time.

Publication ,  Journal Article
Wu, H-T; Liu, Y-W
Published in: The Journal of the Acoustical Society of America
July 2018

The linear part of transient evoked otoacoustic emission (TEOAE) is thought to be generated via coherent reflection near the characteristic place of constituent wave components. Because of the tonotopic organization of the cochlea, high frequency emissions return earlier than low frequencies; however, due to the random nature of coherent reflection, the instantaneous frequency (IF) and amplitude envelope of TEOAEs both fluctuate. Multiple reflection components and synchronized spontaneous emissions can further make it difficult to extract the IF by linear transforms. This paper proposes to model TEOAEs as a sum of intrinsic mode-type functions and analyze it by a nonlinear-type time-frequency (T-F) analysis technique called concentration of frequency and time (ConceFT). When tested with synthetic otoacoustic emission signals with possibly multiple oscillatory components, the present method is able to produce clearly visualized traces of individual components on the T-F plane. Further, when the signal is noisy, the proposed method is compared with existing linear and bilinear methods in its accuracy for estimating the fluctuating IF. Results suggest that ConceFT outperforms the best of these methods in terms of optimal transport distance, reducing the error by 10% to 21% when the signal to noise ratio is 10 dB or below.

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Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

July 2018

Volume

144

Issue

1

Start / End Page

448

Related Subject Headings

  • Time Factors
  • Signal-To-Noise Ratio
  • Otoacoustic Emissions, Spontaneous
  • Nonlinear Dynamics
  • Noise
  • Humans
  • Cochlea
  • Acoustics
  • Acoustic Stimulation
 

Citation

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Wu, H.-T., & Liu, Y.-W. (2018). Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time. The Journal of the Acoustical Society of America, 144(1), 448. https://doi.org/10.1121/1.5047749
Wu, Hau-Tieng, and Yi-Wen Liu. “Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time.The Journal of the Acoustical Society of America 144, no. 1 (July 2018): 448. https://doi.org/10.1121/1.5047749.
Wu H-T, Liu Y-W. Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time. The Journal of the Acoustical Society of America. 2018 Jul;144(1):448.
Wu, Hau-Tieng, and Yi-Wen Liu. “Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time.The Journal of the Acoustical Society of America, vol. 144, no. 1, July 2018, p. 448. Epmc, doi:10.1121/1.5047749.
Wu H-T, Liu Y-W. Analyzing transient-evoked otoacoustic emissions by concentration of frequency and time. The Journal of the Acoustical Society of America. 2018 Jul;144(1):448.

Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

July 2018

Volume

144

Issue

1

Start / End Page

448

Related Subject Headings

  • Time Factors
  • Signal-To-Noise Ratio
  • Otoacoustic Emissions, Spontaneous
  • Nonlinear Dynamics
  • Noise
  • Humans
  • Cochlea
  • Acoustics
  • Acoustic Stimulation