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ROBUST PHASE DIFFERENCE ESTIMATION OF TRANSIENTS IN HIGH NOISE LEVELS

Keding, Oskar LU and Sandsten, Maria LU (2022) 30th European Signal Processing Conference, EUSIPCO 2022 In European Signal Processing Conference 2022-August. p.2271-2275
Abstract

This paper presents the Reassignment Vector Phase Difference Estimator (RVPDE), which gives noise robust relative phase estimates of oscillating transient signals in high noise levels. Estimation of relative phase information between signals is of interest for direction of arrival estimation, source separation and spatio-temporal decoding in neurology as well as for soundscape analysis. The RVPDE relies on the spectrogram reassignment vectors which contains information of the time-frequency local phase difference between two transient signals. The final estimate, which is robust to high noise levels, is given as the median over the local time-frequency area. The proposed technique is shown to outperform state-of-the-art methods in... (More)

This paper presents the Reassignment Vector Phase Difference Estimator (RVPDE), which gives noise robust relative phase estimates of oscillating transient signals in high noise levels. Estimation of relative phase information between signals is of interest for direction of arrival estimation, source separation and spatio-temporal decoding in neurology as well as for soundscape analysis. The RVPDE relies on the spectrogram reassignment vectors which contains information of the time-frequency local phase difference between two transient signals. The final estimate, which is robust to high noise levels, is given as the median over the local time-frequency area. The proposed technique is shown to outperform state-of-the-art methods in simulations for high noise levels. A discussion on the statistical distribution of the estimates is also presented, and finally an example of phase difference estimation of visually evoked potentials measured from electrical brain signals is shown.

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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
EEG, low SNR, oscillating transient signals, phase estimation, time-frequency reassignment
host publication
30th European Signal Processing Conference, EUSIPCO 2022 - Proceedings
series title
European Signal Processing Conference
volume
2022-August
pages
5 pages
publisher
European Signal Processing Conference, EUSIPCO
conference name
30th European Signal Processing Conference, EUSIPCO 2022
conference location
Belgrade, Serbia
conference dates
2022-08-29 - 2022-09-02
external identifiers
  • scopus:85141010504
ISSN
2219-5491
ISBN
9789082797091
language
English
LU publication?
yes
id
b3211856-4f6f-485d-8fce-67078f99bf64
date added to LUP
2022-12-05 14:22:12
date last changed
2023-11-21 13:27:23
@inproceedings{b3211856-4f6f-485d-8fce-67078f99bf64,
  abstract     = {{<p>This paper presents the Reassignment Vector Phase Difference Estimator (RVPDE), which gives noise robust relative phase estimates of oscillating transient signals in high noise levels. Estimation of relative phase information between signals is of interest for direction of arrival estimation, source separation and spatio-temporal decoding in neurology as well as for soundscape analysis. The RVPDE relies on the spectrogram reassignment vectors which contains information of the time-frequency local phase difference between two transient signals. The final estimate, which is robust to high noise levels, is given as the median over the local time-frequency area. The proposed technique is shown to outperform state-of-the-art methods in simulations for high noise levels. A discussion on the statistical distribution of the estimates is also presented, and finally an example of phase difference estimation of visually evoked potentials measured from electrical brain signals is shown.</p>}},
  author       = {{Keding, Oskar and Sandsten, Maria}},
  booktitle    = {{30th European Signal Processing Conference, EUSIPCO 2022 - Proceedings}},
  isbn         = {{9789082797091}},
  issn         = {{2219-5491}},
  keywords     = {{EEG; low SNR; oscillating transient signals; phase estimation; time-frequency reassignment}},
  language     = {{eng}},
  pages        = {{2271--2275}},
  publisher    = {{European Signal Processing Conference, EUSIPCO}},
  series       = {{European Signal Processing Conference}},
  title        = {{ROBUST PHASE DIFFERENCE ESTIMATION OF TRANSIENTS IN HIGH NOISE LEVELS}},
  volume       = {{2022-August}},
  year         = {{2022}},
}