Method and system for detecting acoustic events in a given environment

The method involves performing unsupervised initialization of a group of classes or subspace of normal ambiance of audio data. Normality of a model (M) is defined. The groups that use the model are optimized to redistribute the data to different groups. An unknown audio signal obtained from a to-be...

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Bibliographische Detailangaben
Hauptverfasser:	Lengelle, Régis, Ravera, Bertrand, Capman, François, Lecomte, Sébastien, Richard, Cédric
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS CALCULATING COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS COMPUTING COUNTING HANDLING RECORD CARRIERS MUSICAL INSTRUMENTS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:	The method involves performing unsupervised initialization of a group of classes or subspace of normal ambiance of audio data. Normality of a model (M) is defined. The groups that use the model are optimized to redistribute the data to different groups. An unknown audio signal obtained from a to-be analyzed environment is analyzed. The unknown audio signal is compared to the obtained model. Comparison of the scores is obtained by classifiers using decision rules to determine the presence or absence of anomaly in the analyzed audio signal. An independent claim is also included for a system for determining abnormal events in an environment.