Method and system for detecting sound events in a given environment - Archive ouverte HAL Access content directly
Patents Year : 2014

Method and system for detecting sound events in a given environment

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Sébastien Lecomte
  • Function : Author
Francois Capman
  • Function : Author
  • PersonId : 982483
Bertrand Ravera
  • Function : Author
  • PersonId : 874041

Abstract

A method and system for detecting abnormal events in a given environment comprises a model construction step comprising: a) a step of unsupervised initialization of Q groups; b) a step of definition of a model of normality consisting of 1-class SVM classifiers; c) a step of optimum distribution of the audio signals in the Q different groups; d) repetition of the steps b and c until a stop criterion C1, is checked and a model M is obtained; and a step of use of the model(s) M obtained from the construction step comprising the analysis of an unknown audio signal ST assigning a score to a 1-class SVM classifier, and a comparison of all the scores fq obtained using decision rules in order to determine the presence or absence of an anomaly in the audio signal analyzed.
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Dates and versions

hal-02861441 , version 1 (09-06-2020)

Identifiers

  • HAL Id : hal-02861441 , version 1

Cite

Sébastien Lecomte, Francois Capman, Bertrand Ravera, Régis Lengellé, Cédric Richard. Method and system for detecting sound events in a given environment. France, Patent n° : US2014046878. 2014. ⟨hal-02861441⟩
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