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  • Research Article
  • Open Access

One-Class SVMs Challenges in Audio Detection and Classification Applications

  • 1Email author,
  • 1,
  • 1 and
  • 1
EURASIP Journal on Advances in Signal Processing20082008:834973

  • Received: 2 October 2007
  • Accepted: 24 April 2008
  • Published:


Support vector machines (SVMs) have gained great attention and have been used extensively and successfully in the field of sounds (events) recognition. However, the extension of SVMs to real-world signal processing applications is still an ongoing research topic. Our work consists of illustrating the potential of SVMs on recognizing impulsive audio signals belonging to a complex real-world dataset. We propose to apply optimized one-class support vector machines (1-SVMs) to tackle both sound detection and classification tasks in the sound recognition process. First, we propose an efficient and accurate approach for detecting events in a continuous audio stream. The proposed unsupervised sound detection method which does not require any pretrained models is based on the use of the exponential family model and 1-SVMs to approximate the generalized likelihood ratio. Then, we apply novel discriminative algorithms based on 1-SVMs with new dissimilarity measure in order to address a supervised sound-classification task. We compare the novel sound detection and classification methods with other popular approaches. The remarkable sound recognition results achieved in our experiments illustrate the potential of these methods and indicate that 1-SVMs are well suited for event-recognition tasks.


  • Support Vector Machine
  • Audio Signal
  • Exponential Family
  • Dissimilarity Measure
  • Family Model

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Authors’ Affiliations

Unité de Recherche Signal, Image et Reconnaissance des Formes, Ecole Nationale d'Ingenieurs de Tunis (ENIT), BP 37, Campus Universitaire, 1002 Tunis, Tunisia


© Asma Rabaoui et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.