The apparatus for the recognition of speech comprises an acoustic preprocessor, a visual preprocessor, and a speech classifier that operates on the acoustic and visual preprocessed data. The acoustic preprocessor comprises a log mel spectrum analyzer that produces an equal mel bandwidth log power spectrum....http://www.google.fr/patents/US5586215?utm_source=gb-gplus-shareBrevet US5586215 - Neural network acoustic and visual speech recognition system
Neural network acoustic and visual speech recognition system
