Patent ID: 6631348
Filing Date: 2003-10-07
Classification: G10L

Abstract:
A speech recognition system comprising:a speech capturing device configured to capture an input utterance; a speech recognition processing mechanism configured to process said input utterance captured by said speech capturing device and to generate an identified utterance signal representing a recognized utterance; a sensor configured to detect a plurality of ambient noise levels and to supply a detected ambient noise level to said speech recognition processing mechanism; and a speech model containing a plurality of stored reference pattern sets representing utterances to be recognized, each of said stored reference pattern sets based on training information corresponding to a select one of said ambient noise levels; wherein, in response to receiving said input utterance and said detected ambient noise level, said speech recognition processing mechanism switches to a stored reference pattern set corresponding to said detected ambient noise level, determines a recognized utterance based on said corresponding stored reference pattern set, and generates a corresponding identified utterance signal.