CONF Sun_INTERSPEECH-2_2012/IDIAP Using Sparse Classification Outputs as Feature Observations for Noise Robust ASR Sun, Yang Cranen, B. F. Gemmeke, Jort Boves, Lou ten Bosch, Louis Magimai-Doss, Mathew EXTERNAL http://publications.idiap.ch/attachments/papers/2012/Sun_INTERSPEECH-2_2012.pdf PUBLIC Proceedings of Interspeech 2012