| 摘要 |
PROBLEM TO BE SOLVED: To enable even a driver who is driving to reasonably enjoy karaoke with reproduced music. SOLUTION: A reproduced sound (2) for text recognition is outputted with small sound volume a specific time before a reproduced sound (3) for karaoke is outputted and then the user is able to previously listen to the text at the head of a phrase, so the user can remember the text of the phrase and pleasantly sing synchronizing to the reproduced sound (3) for karaoke which is outputted later. |
