11. The voice recognition system of claim 6 , wherein the voice recognition unit is further configured to calculate a plurality of probabilities that the user's voice matches the voice patterns in the first model, and to select a highest probability from the plurality of probabilities as the first probability.
6. The voice recognition system of claim 1 , wherein the voice recognition unit is further configured to calculate a first probability that the user's voice matches at least one of the voice patterns that belong to a first model, and a second probability that the user's voice matches one of the voice patterns that belong to a second model.