9th Annual Conference of the International Speech Communication Association

Brisbane, Australia
September 22-26, 2008

Detection of Acoustic Events in Interactive Seminar Data with Temporal Overlaps

Andrey Temko, Climent Nadeu

Universitat Politècnica de Catalunya, Spain

In Acoustic Event Detection (AED), both the identity of sounds and their position in time have to be obtained. In this paper, we first present our SVM-based system for AED in real-time conditions, along with the databases and metrics developed for the interna- tional evaluation campaign CLEAR 2007. In that evaluation, which was carried out with a real environment database that consists of interactive seminar recordings, the biggest encountered problem for AED was the presence of temporal overlaps, since they account for more than 70% of errors. In this paper we also report an initial attempt to deal with the overlap problem at the level of models. A two-step approach is proposed and it is tested firstly with artificially - overlapped acoustic data, and then with the above-mentioned seminar data.

Full Paper

Bibliographic reference.  Temko, Andrey / Nadeu, Climent (2008): "Detection of acoustic events in interactive seminar data with temporal overlaps", In INTERSPEECH-2008, 2594-2597.