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EURASIP Journal on Advances in Signal Processing
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Wavelets in Recognition of Bird Sounds

EURASIP Journal on Advances in Signal Processing volume 2007, Article number: 051806 (2006) Cite this article

Abstract

This paper presents a novel method to recognize inharmonic and transient bird sounds efficiently. The recognition algorithm consists of feature extraction using wavelet decomposition and recognition using either supervised or unsupervised classifier. The proposed method was tested on sounds of eight bird species of which five species have inharmonic sounds and three reference species have harmonic sounds. Inharmonic sounds are not well matched to the conventional spectral analysis methods, because the spectral domain does not include any visible trajectories that computer can track and identify. Thus, the wavelet analysis was selected due to its ability to preserve both frequency and temporal information, and its ability to analyze signals which contain discontinuities and sharp spikes. The shift invariant feature vectors calculated from the wavelet coefficients were used as inputs of two neural networks: the unsupervised self-organizing map (SOM) and the supervised multilayer perceptron (MLP). The results were encouraging: the SOM network recognized 78% and the MLP network 96% of the test sounds correctly.

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Authors and Affiliations

  1. Department of Information Technology, Tampere University of Technology, P.O. Box 300, Pori, 28101, Finland

    Arja Selin, Jari Turunen & Juha T. Tanttu

Authors
  1. Arja Selin
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  2. Jari Turunen
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  3. Juha T. Tanttu
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Correspondence to Arja Selin.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Selin, A., Turunen, J. & Tanttu, J.T. Wavelets in Recognition of Bird Sounds. EURASIP J. Adv. Signal Process. 2007, 051806 (2006). https://doi.org/10.1155/2007/51806

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  • DOI: https://doi.org/10.1155/2007/51806

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