An analysis of content-based classification of audio signals using a fuzzy c-means algorithm

  • Authors:
  • Mohammad A. Haque;Jong-Myon Kim

  • Affiliations:
  • School of Electrical Engineering, University of Ulsan, Ulsan, South Korea 680-749;School of Electrical Engineering, University of Ulsan, Ulsan, South Korea 680-749

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 2013

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Abstract

Content-based audio signal classification into broad categories such as speech, music, or speech with noise is the first step before any further processing such as speech recognition, content-based indexing, or surveillance systems. In this paper, we propose an efficient content-based audio classification approach to classify audio signals into broad genres using a fuzzy c-means (FCM) algorithm. We analyze different characteristic features of audio signals in time, frequency, and coefficient domains and select the optimal feature vector by employing a noble analytical scoring method to each feature. We utilize an FCM-based classification scheme and apply it on the extracted normalized optimal feature vector to achieve an efficient classification result. Experimental results demonstrate that the proposed approach outperforms the existing state-of-the-art audio classification systems by more than 11% in classification performance.