Unsupervised blue whale call detection using multiple time-frequency features

Alejandro Cuevas, Alejandro Veragua, Sonia Español-Jiménez, Gustavo Chiang, Felipe Tobar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

In the context of bio-acoustic sciences, call detection is a critical task for understanding the behaviour of marine mammals such as the blue whale species (Balaeonoptera musculus) considered in this work. In this paper we present an approach to blue whale call detection from an unsupervised perspective. To achieve this, we use temporal and spectral features of audio acquired with a marine autonomous recording unit. The features considered are 46-dimensional and include the mel frequency ceptrum coefficients, chromagrams, and other scalar quantities; these features were then grouped via two different clustering algorithms. Our findings confirm the suitability of the proposed approach for isolating blue whale calls from other environmental sounds (as validated by a bio-acoustic specialist). This is a clear contribution for the annotation of blue whales calls, where the search for calls can now be performed by analysing the clusters identified instead of the entire recordings, thus saving time and effort for practitioners in bio-acoustics.

Original languageEnglish
Title of host publication2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538631232
DOIs
Publication statusPublished - 19 Dec 2017
Externally publishedYes
Event2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2017 - Pucon, Chile
Duration: 18 Oct 201720 Oct 2017

Publication series

Name2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2017 - Proceedings
Volume2017-January

Conference

Conference2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, CHILECON 2017
Country/TerritoryChile
CityPucon
Period18/10/1720/10/17

Keywords

  • Bioacoustic
  • Blue whale
  • Ceptrum
  • Clustering
  • MFCC
  • Mixture of gaussians
  • Signal processing

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Computer Networks and Communications
  • Control and Systems Engineering

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