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Non-parametric Envelope Estimation for the Matched Window Reassignment

Reinhold, Isabella LU and Sandsten, Maria LU (2021) 29th European Signal Processing Conference, EUSIPCO 2021 In European Signal Processing Conference 2021-August. p.1920-1924
Abstract

The reassigned spectrogram is a powerful tool for analysing non-stationary signals, and in an ideal setting it gives perfect time and frequency localisation. A method very well suited for oscillating transient signals is the matched window reassignment, which requires a matching window, i.e. the envelope of the transient, to be known or estimated beforehand. This paper proposes a novel method for estimating the envelope of noisy transients, using a non-parametric and computationally efficient approach. The estimated envelopes are used to calculate the matched window reassignment, obtaining estimates of the time-frequency centre of the transients. The reassignment using the estimated envelopes is shown to give good estimates of the... (More)

The reassigned spectrogram is a powerful tool for analysing non-stationary signals, and in an ideal setting it gives perfect time and frequency localisation. A method very well suited for oscillating transient signals is the matched window reassignment, which requires a matching window, i.e. the envelope of the transient, to be known or estimated beforehand. This paper proposes a novel method for estimating the envelope of noisy transients, using a non-parametric and computationally efficient approach. The estimated envelopes are used to calculate the matched window reassignment, obtaining estimates of the time-frequency centre of the transients. The reassignment using the estimated envelopes is shown to give good estimates of the time-frequency centres, and good localisation in time and frequency. The novel envelope estimation approach is illustrated on measured marine biosonar data.

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Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Oscillating transient, Reassigned spectrogram, Time-frequency analysis
host publication
29th European Signal Processing Conference, EUSIPCO 2021 - Proceedings
series title
European Signal Processing Conference
volume
2021-August
pages
5 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
29th European Signal Processing Conference, EUSIPCO 2021
conference location
Dublin, Ireland
conference dates
2021-08-23 - 2021-08-27
external identifiers
  • scopus:85123213842
ISSN
2219-5491
ISBN
9789082797060
DOI
10.23919/EUSIPCO54536.2021.9616053
language
English
LU publication?
yes
id
08dae7fc-57c0-4ea7-a939-8f30fe6a0ddf
date added to LUP
2022-03-24 14:41:11
date last changed
2022-04-24 22:32:21
@inproceedings{08dae7fc-57c0-4ea7-a939-8f30fe6a0ddf,
  abstract     = {{<p>The reassigned spectrogram is a powerful tool for analysing non-stationary signals, and in an ideal setting it gives perfect time and frequency localisation. A method very well suited for oscillating transient signals is the matched window reassignment, which requires a matching window, i.e. the envelope of the transient, to be known or estimated beforehand. This paper proposes a novel method for estimating the envelope of noisy transients, using a non-parametric and computationally efficient approach. The estimated envelopes are used to calculate the matched window reassignment, obtaining estimates of the time-frequency centre of the transients. The reassignment using the estimated envelopes is shown to give good estimates of the time-frequency centres, and good localisation in time and frequency. The novel envelope estimation approach is illustrated on measured marine biosonar data.</p>}},
  author       = {{Reinhold, Isabella and Sandsten, Maria}},
  booktitle    = {{29th European Signal Processing Conference, EUSIPCO 2021 - Proceedings}},
  isbn         = {{9789082797060}},
  issn         = {{2219-5491}},
  keywords     = {{Oscillating transient; Reassigned spectrogram; Time-frequency analysis}},
  language     = {{eng}},
  pages        = {{1920--1924}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{European Signal Processing Conference}},
  title        = {{Non-parametric Envelope Estimation for the Matched Window Reassignment}},
  url          = {{http://dx.doi.org/10.23919/EUSIPCO54536.2021.9616053}},
  doi          = {{10.23919/EUSIPCO54536.2021.9616053}},
  volume       = {{2021-August}},
  year         = {{2021}},
}