2. A voice recognition device controller according to claim 1 , further comprising a learning level storage unit configured to updatably store the user's temporary learning level in speech, wherein the reference input item count setting unit sets the reference value for the number of items identified from the speech based on the user's temporary learning level in speech stored by the learning level storage unit.
2. A voice recognition device controller according to claim 1 , further comprising a learning level storage unit configured to updatably store the user's temporary learning level in speech, wherein the reference input item count setting unit sets the reference value for the number of items identified from the speech based on the user's temporary learning level in speech stored by the learning level storage unit. 12. A voice recognition device controller according to claim 2 , wherein the response control unit includes a unit configured to control a response in such a way as to prompt the user for a given number of items, with the given number set according to the learning level determined by the learning level determination unit, among items not identified from the speech recognized by the voice recognition unit, if any, among the given number of items necessary to control the device.