Experiments of Acoustic Event Detection and Localization in an Underground Station
This paper deals with the use of linear microphone arrays for detection and localization of acoustic events in real noisy environment. During the ESPRIT project DIMUS (ESPRIT 5345) a prototype was developed that provided high performance in a demonstration room. The envisaged application is an acoustic surveillance system to be installed in an underground station (DIMUS project ESPRIT 5345). For this purpose, some scenarios were defined in a real station and some preliminary experiments were conducted to verify system robustness. The results show satisfactory performance in detecting and localizing impulsive events (e.g. explosions), while there is a slight drawback for other events (e.g. screams). Due to this, further study is needed concerning the system adaptation to real environment, characterized by critical noise and reverberation components.
KeywordsUnderground Station Noisy Environment Acoustic Event Impulsive Event Coherence Measure
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