Vol.9, No.4, November 2020.                                                                                                                                                                           ISSN: 2217-8309

                                                                                                                                                                                                                        eISSN: 2217-8333


TEM Journal



Association for Information Communication Technology Education and Science

Dolphins Underwater Sounds Database: Preliminary Analysis Results


Hristo Zhivomirov, Ivaylo Nedelchev


© 2020 Hristo Zhivomirov, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)


Citation Information: TEM Journal. Volume 9, Issue 4, Pages 1426-1434, ISSN 2217-8309, DOI: 10.18421/TEM94-14, November 2020.


Received: 13 August 2020.

Revised:   09 October 2020.
Accepted:  14 October 2020.
Published: 27 November 2020.




The present paper treats the signal recording and the preliminary analysis of the vocalization of five Caribbean bottlenose dolphins (Tursiops Truncates) in the controlled aquatic environment – a dolphinarium water pool. The data are taken using measurement equipment from the world's leading companies – Brüel&Kjær and National Instruments Corporation. All records have been denoised and segmented in advance so that only the vocal-active parts to be analyzed. The most representative part of the records and analysis results are deposited in one of world's most reputable databases – IEEE DataPort™, under the name "Dolphins Underwater Sounds Database". All analyses are conducted in the Matlab environment, thus they include: signal oscillogram, overall frequency spectrum, time-frequency spectrogram, time-quefrency cepstrogram and also signal correlogram and amplitude histogram. The report is rich in figures that represent some of the most interesting results. Finally, some common conclusions are drawn, based on the analysis results, and along with considerations for feature work.


Keywords –dolphins, underwater, sounds, signals, analysis.



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