The matched reassignment applied to echolocation data

Maria Sandsten, Johan Brynolfsson, Isabella Reinhold, Josefin Starkhammar

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Previous studies have shown that measurements of beluga whale (Delphinapterus leucas) and bottlenose dolphin (Tur-siops truncatus) echolocation signals at off-axis angles may be well modeled using a Gaussian bell function or a chirped Gaussian function as envelope. In this paper, we apply a novel technique, the matched window reassignment, for investigation of a range of models of dolphin echolocation transients. Using a set of parameterized skewed envelopes and a dictionary-based estimation algorithm, it is shown that the Rényi entropy can be used as an evaluation measure of the model fit. Acoustic recordings from an array of hydrophones of a beluga's echolocation signal are investigated, where the Gaussian envelope frequency modulation function resulted in the lowest Rényi entropy mean and the two-parametric Gum-bel model showed the best observed fit.
Original languageEnglish
Title of host publicationICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages8236-8240
Number of pages5
ISBN (Electronic)978-1-4799-8131-1
ISBN (Print)978-1-4799-8132-8
DOIs
Publication statusPublished - 2019
EventIEEE International Conference on Acoustics, Speech, and Signal Processing 2019 - Brighton, United Kingdom
Duration: 2019 May 132019 May 17
Conference number: 44

Publication series

Name Proceedings of the ... IEEE International Conference on Acoustics, Speech, and Signal Processing.
PublisherIEEE
ISSN (Print)1520-6149
ISSN (Electronic)2379-190X

Conference

ConferenceIEEE International Conference on Acoustics, Speech, and Signal Processing 2019
Abbreviated titleICASSP 2019
Country/TerritoryUnited Kingdom
CityBrighton
Period2019/05/132019/05/17

Subject classification (UKÄ)

  • Probability Theory and Statistics
  • Signal Processing

Free keywords

  • time-frequency localization
  • reassignment
  • transient
  • envelope model
  • echolocation signals

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