Model based abnormal acoustic source detection using a microphone array

  • Authors:
  • Heungkyu Lee;Jounghoon Beh;June Kim;Hanseok Ko

  • Affiliations:
  • Dept. of Visual Information Processing, Korea University, Seoul, Korea;Dept. of Electronics and Computer Engineering, Korea University, Seoul, Korea;Dept. of Information and Communication Engineering, Seokyeong University;Dept. of Electronics and Computer Engineering, Korea University, Seoul, Korea

  • Venue:
  • AI'05 Proceedings of the 18th Australian Joint conference on Advances in Artificial Intelligence
  • Year:
  • 2005

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Abstract

This paper proposes the model based detection method of abnormal acoustic source using a microphone array. General source location algorithm using a microphone array can be used to locate a dominant acoustic source, while this does not verify whether the detected source is permitted one or not on outdoor environments. It is difficult to discern it among a natural environmental sound. Thus, to cope with this problem, we propose the out-of-normal acoustic rejection method based on N-best likelihood ratio test using natural environmental sound models. In order to evaluate the proposed algorithm, a real-time DSP was constructed, and experimental evaluation is described.