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.

---

Claim 10:
10. The method of claim 1 wherein said speech recognition system is a grammar-driven continuous word recognition system in which the components of the grammar are represented by said speech recognition models.