Patent Document ID: 5509104
Application ID: 08132430

Base Claim:
1. A method of processing an input signal representing a spoken utterance, the spoken utterance having a key utterance component and an extraneous sound component, the method comprising the steps of comparing the input signal to a plurality of speech recognition models within a speech recognition system, said plurality of speech recognition models including key word speech recognition models representative of respective different key utterances and further including at least a first sink model, and recognizing a particular one of said key utterances in said spoken utterance in response to said comparing, characterized in that said sink model represents a plurality of extraneous sound training tokens, at least two of said extraneous sound training tokens being other than repetitions of a particular one vocabulary item.

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Claim 5:
5. The method of claim 1 wherein individual tasks are associated with each of said key utterances and wherein said method comprises the further step of performing the task associated with the key utterance recognized in said recognizing step.