5. The system according to claim 4 , wherein said talk-back voice output unit outputs a voice which reads out, in the voice-recognized order, said partial character strings in a manner such that the string is delimited by silent intervals.
4. The system according to claim 1 , wherein said voice recognition unit performs voice recognition for each articulation period of the user, which is delimited at delimiting points detected by said articulation delimiting points detecting unit, and sets a voice-recognized character string for each articulation period as a partial character string, and said talk-back voice output unit outputs a voice which reads out, in the voice-recognized order, said partial character strings in a manner such that the character string is delimited into each partial character string.