12. A speech recognition system for recognizing a customer identifier comprising: a speech processing computer that generates a first plurality of customer identifier choices from a speech signal and a probability for each customer identifier choice; and a database coupled to said computer, said database having stored thereon a plurality of customer attribute parameters indexed to a second plurality of customer identifier choices; wherein said speech processing computer selects one of the first plurality of customer identifier choices as said customer identifier based on the probabilities and one or more of said customer attribute parameters which adjust said probabilities.
17. The speech recognition system of claim 12, wherein the plurality of customer parameters comprise an amount of purchases for each of said second plurality of customer identifier choices.