A speech recognizer operating in both ambient noise (additive distortion) and microphone changes (convolutive distortion) is provided. For each utterance to be recognized the recognizer system adapts HMM mean vectors with noise estimates calculated from pre-utterance pause and a channel estimate calculated...http://www.google.es/patents/US7165028?utm_source=gb-gplus-sharePatente US7165028 - Method of speech recognition resistant to convolutive distortion and additive distortion
Method of speech recognition resistant to convolutive distortion and ...
