1. IPP,Dept Electronic and Physics Telecom-SudParis IMT,Evry,France
2. Institut Polytechnique de Paris,SAMOVAR Télécom-Sudparis,Evry,France
3. AIST Tokyo Waterfront,Artificial Intelligence Research Center,Tokyo,Japan
4. Universidad del Pais vasco UPV/EHU,Speech Interactive Research Group,Bilbao,Spain