PURPOSE: To facilitate input operation by a voice by confirming whether or not a vocabulary can be accepted in speech recognition by a voice.

CONSTITUTION: This processor is equipped with a speech recognition part 102 which recognizes a vocabulary inputted from a speech input part 101, an input decision part 104 which decides whether or not a vocabulary that is recognized and held in a recognition result holding part 103 is a confirmation request command, a confirmation request command holding part 105 which holds the confirmation request command used for comparison when the input decision part 104 makes a decision, a speech synthesis part 107 which synthesizes a speech, and a speech output part 108 which outputs the synthesized speech. Then a command for confirming whether or not a vocabulary can be accepted is inputted by a voice. When the inputted vocabulary is the command for a confirmation request, a successively inputted vocabulary is recognized and the vocabulary obtained as a result is displayed on a display or outputted by speech synthesis through a speaker.