Non-parametric Envelope Estimation for the Matched Window Reassignment
(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.
(Less)
- author
- Reinhold, Isabella LU and Sandsten, Maria LU
- organization
- publishing date
- 2021
- 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}}, }