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 language | English |
---|---|
Title of host publication | ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) |
Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
Pages | 8236-8240 |
Number of pages | 5 |
ISBN (Electronic) | 978-1-4799-8131-1 |
ISBN (Print) | 978-1-4799-8132-8 |
DOIs | |
Publication status | Published - 2019 |
Event | IEEE International Conference on Acoustics, Speech, and Signal Processing 2019 - Brighton, United Kingdom Duration: 2019 May 13 → 2019 May 17 Conference number: 44 |
Publication series
Name | Proceedings of the ... IEEE International Conference on Acoustics, Speech, and Signal Processing. |
---|---|
Publisher | IEEE |
ISSN (Print) | 1520-6149 |
ISSN (Electronic) | 2379-190X |
Conference
Conference | IEEE International Conference on Acoustics, Speech, and Signal Processing 2019 |
---|---|
Abbreviated title | ICASSP 2019 |
Country/Territory | United Kingdom |
City | Brighton |
Period | 2019/05/13 → 2019/05/17 |
Subject classification (UKÄ)
- Probability Theory and Statistics
- Signal Processing
Free keywords
- time-frequency localization
- reassignment
- transient
- envelope model
- echolocation signals