12th Annual Conference of the International Speech Communication Association

Florence, Italy
August 27-31. 2011

University of Ljubljana System for Interspeech 2011 Speaker State Challenge

Rok Gajšek, Simon Dobrišek, France Mihelič

University of Ljubljana, Slovenia

The paper presents our efforts in the Interspeech 2011 Speaker State Challenge. Both systems, for the Intoxication and the Sleepiness Sub-Challenge, are based on a Universal Background Model (UBM) in a form of a Hidden Markov Model (HMM), and the Maximum A Posteriori (MAP) adaptation. With the combination of our HMM-UBM-MAP derived supervectors and selected statistical functionals from the baseline feature set, we were able to surpass the baseline system in both sub-challenges. By employing majority voting fusion of best systems we were able to further improve the performance. In the Intoxication Sub-Challenge our best result on the test set is 67.46%, and in the Sleepiness Sub-Challenge 71.28%.

Full Paper

Bibliographic reference.  Gajšek, Rok / Dobrišek, Simon / Mihelič, France (2011): "University of Ljubljana system for interspeech 2011 speaker state challenge", In INTERSPEECH-2011, 3297-3300.