CONF Aradilla_ICASSP_2009/IDIAP Posterior features applied to speech recognition tasks with user-defined vocabulary Aradilla, Guillermo Bourlard, Hervé Magimai-Doss, Mathew EXTERNAL http://publications.idiap.ch/attachments/papers/2009/Aradilla_ICASSP_2009.pdf PUBLIC Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2009