| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation system, with which even a driver under driving can enjoy KARAOKE in safe without damaging the original display function of a navigation on a display. SOLUTION: The MIDI data of music and the text data of the song lyrics from an internet are fetched by a portable telephone set 33, the text data are synthesized into voices by a system controller 7 under the control of a CPU 1, the synthetic audio data are decoded by an audio decoder 21 just before respective phrases, the lyrics are outputted in voice from a speaker 25 through a D/A converter, LPF 23 and amplifier 24, just after that, the MIDI data of this phrase are decoded by the audio decoder 21, and melody sounds are outputted from the speaker 25 through a D/A converter 22, LPF 23 and amplifier 24. Then, the user under driving can listen to the lyrics just before the phrases from the speaker under outputting the music without watching the display and can enjoy KARAOKE while driving in safe without damaging the function of the navigation. |
